Most dog parents know that early detection is one of the most powerful tools we have in the fight against canine cancer. In fact, many cancers are far more treatable — and sometimes even curable — when caught early.

While a monthly home check matters all year long, December is a uniquely important time to slow down, get hands-on, and really examine your dog. Seasonal changes, routine disruptions, and thicker winter coats can make early warning signs easier to miss — unless you’re intentionally looking for them.

Here’s why the December #CheckYourDog is so important, and how it helps protect your dog’s health as you head into a new year.

Winter Coats Can Hide Early Warning Signs

As temperatures drop, dogs grow thicker coats — and winter is also prime season for matting, dry skin, and under-brushed areas. While those fluffy layers keep dogs warm, they can also hide small lumps, skin changes, or swelling that may signal a developing health issue.

That’s why December is an ideal month to go beyond a quick pat and do a slow, fingertip-to-skin exam.

Take extra time to brush and comb your dog first, especially if they’re prone to matting. Getting down to the skin makes it much easier to feel subtle changes that aren’t visible yet. For tough mats, tools like a slicker brush or mat breaker can help without causing discomfort.

During your lump check, move slowly and feel along the:

  • ribs

  • belly

  • armpits

  • inner thighs

  • shoulders

  • chest

  • base of the tail

  • behind the ears

Many cancerous lumps in dogs are painless and easy to miss early on, which is why consistency — and documentation — matters. Write down anything new you find in your Wellness Journal, even if it seems small. Tracking changes over time is one of the most powerful things you can bring to your vet.

(You can find a full list of #CheckYourDog checkpoints on our dog cancer prevention page.)

Know What to Look For. Know When to Act.

A quick monthly check can help you notice changes early—when treatment options are often wider and outcomes can be better. Our #CheckYourDog prevention guide shows you exactly what to look for, where to check, and when it’s time to call your vet.


Visit the Dog Cancer Prevention Page

Holiday Routines Can Mask Early Symptoms

December brings travel, guests, decorations, kids home from school, and late nights, all of which can disrupt your dog’s normal routine. While many behavior changes are harmless responses to excitement or stress, some overlap with early signs of illness, including cancer.

During the holidays, pay close attention to subtle changes such as:

  • sleeping more than usual

  • drinking more water

  • slowing down on walks

  • not finishing meals

  • mild or intermittent limping

  • new anxiety or reactivity

These changes are easy to dismiss as “holiday chaos.” The December #CheckYourDog helps you notice, record, and re-evaluate once life settles back into its normal rhythm. If a symptom persists into January, you’ll know it’s time to follow up.

Seasonal Foods Can Complicate Digestive Health

The holidays also bring more rich foods into the house — and despite our best efforts, dogs often get access to foods they don’t normally eat. Between dropped snacks, well-meaning relatives, and special treats, digestive upset becomes more common in December.

Watch for signs like:

  • gurgly or noisy stomach

  • vomiting

  • soft stools or diarrhea

While many GI issues are temporary, persistent digestive changes can sometimes signal deeper inflammation or systemic problems. A December health check gives you a clearer picture of what’s temporary and what deserves veterinary attention once the holidays pass.

A Baseline That Sets You Up for the New Year

One of the most overlooked benefits of the December #CheckYourDog is that it gives you a clear baseline heading into January.

Pair your December check with:

  • a fresh Wellness Journal for the new year

  • your dog’s annual veterinary visit

  • updated walking, training, or enrichment goals

When you start the year informed and organized, it’s easier to spot changes early and early detection saves lives.

Want to share that peace of mind with other dog lovers? Download the Wellness Journal, print a few copies, and tuck them into stockings or gift bags. It’s a simple way to spread awareness that truly makes a difference.

Track What Matters. Protect What You Love.

Early detection isn’t about remembering everything—it’s about writing it down. Our free Wellness Journal helps you log monthly #CheckYourDog checks, track changes over time, and walk into vet visits prepared and confident.


Download the Free Wellness Journal

A Final Thought

The December #CheckYourDog isn’t just another box to check off.

It’s a moment of connection.
A pause during a busy season.
A powerful act of love.

By taking time now, you step into the new year with awareness, confidence, and the knowledge that you’re doing everything you can to protect the dog who gives you so much. Early detection saves lives and December is the perfect time to begin.

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Understanding Cancer in Dogs: What Every Pet Owner Should Know.    
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