How to Do a Monthly Skin Check on Your Dog at Home

By Emiel Maddens  ·  Reviewed in consultation with licensed veterinary professionals  ·  Updated June 2026  ·  10 min read

Photo by Alexander Mass on Unsplash

Your dog's skin is the largest organ in their body, and it is constantly exposed to environmental stressors, allergens, parasites, and the normal processes of aging. Regular at-home skin checks are one of the most valuable things you can do for your dog's health, yet most owners only discover skin problems incidentally, often after they have progressed to a point where they are obvious and potentially harder to treat. A structured monthly skin examination takes just 10 to 15 minutes and can catch everything from early-stage tumors to developing allergic conditions before they become serious problems.

Veterinarians consistently emphasize that early detection is the single most important factor in achieving good outcomes for skin tumors, infections, and immune-mediated skin diseases. A mast cell tumor caught at one centimeter has a dramatically better prognosis than one discovered at four centimeters. An allergic skin condition identified at the first signs of redness responds more quickly to treatment than one that has progressed to chronic thickening and secondary infection. Your regular hands-on examination of your dog's skin is an essential complement to annual or semi-annual veterinary check-ups.

This guide provides a step-by-step approach to performing a thorough monthly skin check, covering the systematic examination technique, what abnormalities to look for, how to document your findings, and when to schedule a veterinary appointment.

Setting Up for a Successful Skin Check

Choosing the Right Time and Place

Pick a time when your dog is relaxed and calm, such as after a walk or play session when they have burned off excess energy. A quiet, well-lit room provides the best environment for a thorough examination. Natural daylight or bright overhead lighting helps you see subtle color changes and small lesions that might be missed in dim conditions. If your dog has a dark coat, a bright flashlight or headlamp can illuminate the skin beneath dense fur more effectively. Lay down a comfortable blanket or mat where your dog can lie on their side, as you will need them to roll over during the examination. Having treats on hand helps keep the experience positive and reinforces cooperative behavior for future checks.

What You Will Need

Gather a few simple supplies before starting your skin check. A fine-toothed comb helps you part the fur systematically to examine the skin surface in densely coated breeds. A ruler or coin for size reference when photographing any findings is essential for objective comparison over time. Your phone or camera should be ready for documentation. A small notebook or digital note-taking app allows you to record the location, size, appearance, and date of any findings. If you maintain a body map (a simple sketch of your dog's outline with markings for known lumps and lesions), have it available for updating. Some owners keep a dedicated photo album on their phone labeled with their dog's name for easy access during veterinary visits.

Making It a Positive Experience

Your dog's willingness to cooperate during skin checks makes the process much more thorough and less stressful for both of you. Start handling exercises early in your dog's life, getting them comfortable with having their ears, paws, belly, and tail examined. Use gentle, soothing handling and reward cooperation with treats and praise. If your dog is anxious about being examined, break the check into shorter sessions over several days rather than forcing a complete examination in one sitting. Over time, most dogs learn to tolerate and even enjoy the attention of a skin check. For dogs with significant handling anxiety, consider working with a positive-reinforcement trainer to build tolerance for body handling.

The Head-to-Tail Examination: A Step-by-Step System

Head and Face

Begin your examination at the head, systematically working from the top of the skull backward. Run your fingers over the top of the head, feeling for any lumps, bumps, or scabs beneath the fur. Examine the ears carefully, looking at the outer pinnae (ear flaps) on both sides for redness, scaling, masses, or discharge. Gently lift each ear flap and inspect the inner surface and ear canal opening for redness, wax buildup, odor, or dark debris that might indicate mites. Check the skin around the eyes, looking for redness, swelling, discharge, hair loss, or pigment changes. Lift the lips on both sides to inspect the gums, inner cheeks, and tongue for masses, color changes, or areas of bleeding. Examine the nose for crusting, depigmentation, or textural changes. Feel under the jaw and along the throat for enlarged lymph nodes, which present as firm, rounded swellings.

Neck, Shoulders, and Front Legs

Move your hands down the neck, parting the fur to examine the skin surface as you go. Pay particular attention to the area where the collar sits, checking for irritation, redness, or masses that may develop from chronic friction. Feel along the throat and the sides of the neck, noting any lumps or thickened areas. Examine the top of the shoulders and the chest, running your hands over the surface and then parting the fur in several spots to visualize the skin directly. Move down each front leg from the shoulder to the paw, feeling for lumps along the way. Examine each paw carefully, spreading the toes to check the interdigital spaces for redness, swelling, cysts, or foreign bodies. Inspect each toenail and nail bed for discoloration, cracking, swelling, or discharge. Check the pads for cuts, cracks, growths, or excessive hardening.

Trunk and Belly

The trunk and belly cover the largest skin surface area and require systematic attention. With your dog standing, run your hands along both sides of the ribcage, feeling for subcutaneous lumps that may not be visible through the coat. Part the fur in several spots along the back and sides to check for redness, scaling, papules, or crusting. Have your dog lie on their side or back to expose the belly and groin. The belly skin is thinner and more sensitive, so examine gently. Look for redness, pustules, crusting, blackened skin (hyperpigmentation), or any raised lesions. Check the mammary chain in female dogs and the prepuce area in male dogs for masses. The groin and axillary (armpit) regions are warm, moist areas prone to yeast and bacterial infections, so look for redness, oiliness, and odor in these zones.

Back, Tail, and Hind End

Continue your examination along the back toward the tail. Feel along the spine and lumbar region for any lumps or areas of tenderness. The tail base is an important area to examine, as it is a common site for flea allergy dermatitis and, in intact male dogs, stud tail. Part the fur at the base of the tail and look for redness, greasiness, hair loss, or flea dirt (tiny black specks that turn red when wet). Lift the tail to inspect the perianal region for masses, swelling, or discharge from the anal glands. Examine each hind leg from hip to paw, following the same process as the front legs. Pay special attention to the hock (ankle) area, which can develop calluses, pressure sores, or hygroma-like swellings in larger breeds. Check the hind paws, toes, and nail beds with the same thoroughness as the front.

Systematic skin checks help catch changes early, when treatment is most effective and outcomes are best.

Photo by Anya Prygunova on Unsplash

What to Look For During Your Skin Check

Lumps, Bumps, and Masses

Any new lump or bump deserves attention and documentation. Note the location, approximate size, texture (soft, firm, hard), mobility (freely movable or fixed to underlying tissue), shape (round, irregular, pedunculated), and surface (smooth, rough, ulcerated, hairless). While most skin lumps in dogs turn out to be benign, there is no way to determine this by external examination alone. Mast cell tumors, the most common malignant skin tumor in dogs, can look identical to benign growths. As a general guideline, any lump larger than a pea that persists for more than two weeks, any lump that is growing, and any lump that changes in appearance should be evaluated by your veterinarian with fine needle aspiration.

Redness, Rashes, and Hot Spots

Look for areas of reddened skin (erythema), which can indicate inflammation from allergies, infection, parasites, or immune-mediated disease. Rashes may present as diffuse redness, raised bumps (papules), pus-filled bumps (pustules), or flat, scaling patches. Hot spots (acute moist dermatitis) appear as rapidly developing, painful, oozing patches of inflamed skin, often on the face, neck, or hip area. Check for patterns of redness, as the distribution can provide diagnostic clues. Bilateral (both sides) involvement of the ears, paws, and belly suggests allergic disease. A single, localized area of redness and hair loss may indicate a bacterial or fungal infection. Redness concentrated along the back near the tail base is a classic sign of flea allergy.

Hair Loss and Coat Changes

Note any areas of thinning fur, bald patches, or changes in coat texture. Hair loss (alopecia) can be symmetrical or asymmetrical, localized or generalized, and may or may not be accompanied by skin changes. Symmetrical hair loss without significant skin inflammation often suggests an endocrine (hormonal) cause such as hypothyroidism or Cushing's disease. Patchy, circular areas of hair loss with scaling may indicate ringworm (dermatophytosis). Moth-eaten or diffuse thinning with follicular casting (keratin debris around hair shafts) can be seen in sebaceous adenitis or demodicosis. Changes in coat color, texture (becoming dull, brittle, or greasy), or growth pattern can also signal underlying health issues and should be mentioned at your next veterinary visit.

Skin Color and Texture Changes

Beyond redness, look for other color changes in the skin. Darkening of the skin (hyperpigmentation) in areas of chronic inflammation, such as the belly, groin, or armpits, often indicates ongoing allergic or infectious processes. Lightening of pigmented areas, particularly on the nose and lips, may signal autoimmune conditions like discoid lupus erythematosus. Thickening of the skin (lichenification), which gives it an elephant-skin or leathery appearance, develops in areas of chronic rubbing and inflammation. Crusting, scaling, and flaking can indicate a wide range of conditions from simple dry skin to more serious keratinization disorders. Any unusual discharge, weeping, or oozing from the skin surface is abnormal and warrants investigation.

Documenting Your Findings

Photography Best Practices

Good documentation photography follows a few simple principles that make your images much more useful for tracking changes and sharing with your veterinarian. Always include a size reference in the frame, such as a coin, ruler, or your fingertip next to the finding. Use consistent lighting, preferably natural daylight or bright overhead light, and avoid using flash directly on the lesion, as it can wash out subtle color differences. Take photos from the same angle and distance each time for reliable comparison. Include a wider contextual shot showing the body region where the finding is located, followed by a close-up of the specific area. Save photos with the date and a brief description, and organize them in a dedicated folder or album for easy retrieval. Most smartphones produce images of sufficient quality for monitoring purposes.

Keeping a Skin Health Log

A simple log or journal helps you track your dog's skin health over time and provides a valuable record for veterinary consultations. For each finding, record the date of discovery, body location, size (measured or estimated), appearance (color, texture, shape), and any associated symptoms (itching, pain, discharge). Note whether findings are new, unchanged, or changed from the previous check. You can use a physical notebook, a spreadsheet on your phone, or a dedicated pet health app. The key is consistency, as using the same format each time makes it easy to compare entries and spot trends. Your veterinarian will appreciate having this documented history, as it provides clinical context that a single examination cannot capture.

Using a Body Map

A body map is a simple sketch of your dog's body outline (viewed from the top, bottom, and each side) where you mark the location of known skin findings. Each mark is labeled with a brief description, date of discovery, and a reference to the corresponding photo. When you perform monthly checks, you compare the current examination to the body map, immediately identifying any new findings and checking known ones for changes. Body maps are especially valuable for dogs with multiple skin growths, as they prevent confusion about which lumps are old versus new. You can draw a basic body map yourself or find printable templates online designed specifically for veterinary skin mapping.

When to Contact Your Vet

Not every finding requires an immediate veterinary visit, but several types of discoveries should prompt you to schedule an appointment. Any new lump or bump that you cannot confidently identify should be evaluated, ideally within one to two weeks. Rapidly growing masses warrant urgent evaluation within a few days. Skin changes accompanied by significant itching, pain, or behavioral changes should be assessed promptly. Signs of infection, including increasing redness, warmth, swelling, pus, or foul odor, need professional attention. Progressive hair loss, spreading rashes, or skin changes that worsen despite home care should be discussed with your veterinarian. When in doubt, a phone call or email to your veterinary clinic describing the finding and sharing photos can help determine the urgency of an in-person visit.

Building a Lifelong Skin Health Routine

Integrating Skin Checks with Grooming

One of the most practical ways to ensure consistency with monthly skin checks is to integrate them into your regular grooming routine. If you bathe your dog monthly, the bath provides an excellent opportunity for a thorough skin examination, as wet fur lies flat and allows better visualization of the skin surface. The post-bath blow-dry, if your dog tolerates it, gives you another chance to examine the skin as you part the coat with a brush. Routine brushing sessions are also natural opportunities for running your hands over the body and feeling for new lumps. By combining skin checks with activities you already do, the examination becomes a habit rather than an additional chore to remember.

Age-Specific Considerations

The focus of your skin check may shift as your dog ages. In puppies and young dogs, look for signs of congenital skin conditions, parasite infestations (mites, fleas), ringworm, and the emergence of allergic skin disease, which commonly first appears between one and three years of age. In adult dogs, maintain general surveillance and pay attention to early signs of allergic conditions or hormonal skin changes. In senior dogs (seven years and older), the emphasis shifts toward tumor screening, as the incidence of skin tumors, both benign and malignant, increases significantly with age. Senior dogs benefit from more frequent skin checks, ideally every two weeks, given the higher probability of new growth development. Your veterinarian may recommend semi-annual rather than annual skin evaluations for older dogs or breeds predisposed to skin tumors.

Working with Your Veterinary Team

Your monthly skin checks at home are most effective when they complement, rather than replace, professional veterinary examinations. Share your findings, photos, and body maps at every veterinary visit, even if everything looks normal, as this demonstrates your monitoring system and allows your vet to confirm your observations. Ask your veterinarian to show you what normal skin, lymph nodes, and common benign growths look and feel like, so you have a better baseline for comparison during home checks. If your dog has a diagnosed skin condition being managed at home, your skin check provides valuable information about treatment response that helps your vet fine-tune the management plan. Together, your consistent home monitoring and your veterinary team's professional expertise create the best possible safety net for your dog's skin health.

How to Do a Monthly Skin Check on Your Dog at Home FAQ

Q: How often should I check my dog's skin?

A thorough skin check once a month is recommended for most adult dogs. For senior dogs (seven years and older) or breeds predisposed to skin tumors (Boxers, Pugs, Golden Retrievers, Labrador Retrievers), every two weeks is advisable. Quick visual and tactile checks can be incorporated into daily grooming or petting sessions. The goal is to establish a baseline knowledge of your dog's skin so that any new changes are immediately apparent.

Q: What does a normal skin lump feel like?

There is no single "normal" feel for skin lumps, as even benign growths vary widely. Lipomas (fatty tumors) are soft, squishy, well-circumscribed, and freely movable under the skin. Skin tags are small, soft, and attached by a narrow stalk. Sebaceous adenomas are firm, raised, and wart-like. The key characteristics to assess are whether a lump is freely movable or fixed, soft or firm, smooth or irregular, and whether it has changed since you last checked it. Any lump that deviates from its established baseline warrants veterinary evaluation.

Q: My dog does not like being examined. What should I do?

Start with very short handling sessions, just a few seconds, paired with high-value treats and praise. Gradually increase the duration and the areas you examine as your dog becomes comfortable. Focus on making every touch a positive experience. If your dog is particularly anxious, work with a positive-reinforcement trainer who can help build handling tolerance using desensitization and counter-conditioning techniques. You can also break the skin check into multiple shorter sessions over several days rather than attempting a complete examination all at once.

Q: Should I worry about every new bump I find?

While not every new bump will turn out to be serious, every new bump deserves documentation and monitoring. Most skin lumps in dogs are benign, but the only way to know for certain is through veterinary evaluation, typically with fine needle aspiration. Document the size, location, and appearance of any new finding and monitor it weekly. If it grows, changes, or does not resolve within two to three weeks, schedule a veterinary appointment. The small cost and minimal discomfort of aspirating a lump is a worthwhile investment compared to the potential consequences of an undiagnosed malignancy.

Q: Can I use a regular camera instead of my phone?

Absolutely. Any camera that produces clear, well-lit images is suitable for documenting skin findings. The advantage of using a smartphone is the convenience of having it always available, the ability to take macro (close-up) photos, and the ease of organizing images in dated albums. If you use a dedicated camera, be sure to transfer and organize the photos regularly with clear date and location labels. The most important technical factors are consistent lighting, inclusion of a size reference, and maintaining the same angle and distance for comparison over time.

Sources

Miller, W.H., Griffin, C.E., & Campbell, K.L. (2013). Muller and Kirk's Small Animal Dermatology, 7th Edition. Elsevier.

Hnilica, K.A. & Patterson, A.P. (2016). Small Animal Dermatology: A Color Atlas and Therapeutic Guide, 4th Edition. Elsevier.

Vail, D.M., Thamm, D.H., & Liptak, J.M. (2019). Withrow and MacEwen's Small Animal Clinical Oncology, 6th Edition. Elsevier.

Villalobos, A. & Kaplan, L. (2007). Canine and Feline Geriatric Oncology: Honoring the Human-Animal Bond. Blackwell.

Related Reading

• Mast Cell Tumors in Dogs, Why every new lump should be checked by your vet
• Skin Tags and Warts on Dogs, Common benign growths and how to distinguish them from concerning ones
• Bumps and Lumps on Dog Skin, Overview of common causes of skin bumps in dogs
• Understanding Skin Biopsy Results, What to expect after your vet biopsies a suspicious growth

Emiel Maddens

Founder of Vetified. Develops topical antifungal and antimicrobial formulations for companion animals. Vetified products are listed on DailyMed and manufactured through FDA-registered facilities in the United States.