Boston Terrier That little tuxedo body is curled up tighter than usual. Not on the couch beside you like always, but wedged behind the chair in the corner, facing the wall. Something feels off, but you can’t quite put your finger on it.
That quiet, nagging feeling you get as a Boston parent? Trust it.
Boston Terriers are expressive little creatures, but they’re also surprisingly good at hiding discomfort. It’s a survival instinct baked into their DNA, and it means that by the time something looks obviously wrong, it may have been brewing for a while.
Knowing the early, subtle signs is everything.
1. They’re Sleeping More Than Usual
Sure, Bostons love a good nap. But there’s a difference between a lazy Sunday snooze and a dog who just… doesn’t want to get up.
If your Boston is sleeping through things that would normally send them sprinting to the door, pay attention. Lethargy is one of the most commonly overlooked early symptoms of illness in dogs.
A day of extra rest after heavy activity is normal. Two or more days of unusual quietness is worth a call to your vet.
2. Their Appetite Has Changed
Skipping a meal happens. Skipping multiple meals, or suddenly acting frantic around food after being a picky eater, is a different story.
"A dog’s relationship with food tells you more about their health than almost anything else. Changes in appetite, however subtle, are the body’s way of sending a signal."
Both a sudden loss of interest in food and an unusual increase in hunger can point to underlying issues. Thyroid problems, gastrointestinal upset, dental pain, and more can all show up first on the food bowl.
3. Their Eyes Look Different
Boston Terriers already have those big, gorgeous, slightly-too-large-for-their-face eyes. That’s exactly why eye changes can be easy to miss because you’re used to them looking dramatic.
Look closer.
Cloudiness, redness, excessive discharge, or one eye being held slightly more closed than the other are all signs something may be wrong. Bostons are prone to corneal ulcers and other eye conditions, and these can escalate quickly without treatment.
What Normal vs. Not-Normal Looks Like
Normal: a small amount of sleep crust in the corner after waking up.
Not normal: sticky discharge, a visible film over the eye, pawing at the face, or squinting throughout the day.
4. Their Breathing Sounds Different
As a brachycephalic breed, Bostons already do their fair share of snorting, snuffling, and general weird-breathing-sounds. You know your dog’s normal soundtrack.
When that changes, it matters.
Labored breathing, a new wheeze, breathing with their mouth open while resting, or extended episodes of reverse sneezing that seem more frequent than usual can all indicate respiratory irritation, allergies, or something more serious.
"You know your dog’s breathing patterns better than any vet does. If something sounds new or wrong, that observation is valuable medical information."
5. They’re Drinking Water Differently
Increased thirst is one of those sneaky symptoms that creeps up gradually. You might just notice you’re refilling the bowl more often.
Polydipsia (excessive water drinking) can be a sign of diabetes, kidney disease, Cushing’s disease, or other hormonal issues. It’s not dramatic. It doesn’t look like an emergency. But it is absolutely something to mention to your vet.
Decreased water intake matters too, especially paired with lethargy or changes in urination.
6. Their Coat or Skin Looks Off
A healthy Boston has a short, tight, glossy coat. It shouldn’t look dull, feel flaky, or show patches of thinning.
Skin and Coat Red Flags to Watch For
- Excessive scratching or licking at a specific area
- Redness, bumps, or raw patches
- Hair thinning, especially around the tail or flanks
- A coat that’s suddenly lost its sheen
Skin changes can point to allergies, parasites, hormonal imbalances, or nutritional deficiencies. They’re easy to write off as "just a dry patch," but they’re worth investigating.
7. Something About Their Walk Has Changed
Watch your Boston move. Really watch them.
Are they favoring one leg? Hesitating before jumping up somewhere they’d normally bound onto without a second thought? Moving more stiffly after resting?
Pain in dogs rarely announces itself loudly. It usually shows up in small compensations. A slightly different gait. A reluctance to go down stairs. A Boston who used to launch themselves onto the bed and now stands at the edge and waits.
These are whispers. And they’re worth listening to.
8. Their Gums Don’t Look Right
This one gets skipped because, honestly, most people never look at their dog’s gums. But it takes about two seconds and can tell you a lot.
Healthy gums are pink and moist. Press them gently; the color should return within two seconds after you release.
Pale, white, grey, blue-tinged, bright red, or tacky-dry gums are all signs of a potential emergency. If your Boston’s gums look anything other than bubblegum pink, contact your vet immediately.
9. They’re Acting Unusually Clingy or Unusually Distant
Boston Terriers are famously velcro dogs. They want to be near you, on you, or at minimum within eyeline of you at all times.
So when that changes in either direction, it’s notable.
A Boston who suddenly won’t leave your side (even by their standards) or who is uncharacteristically withdrawn and seeking isolation is often trying to communicate something. Animals instinctively seek comfort when they don’t feel well, and sometimes they instinctively hide.
"Behavioral changes are symptoms too. A dog who isn’t acting like themselves is giving you information, even if they can’t say what’s wrong."
10. Their Stomach Looks or Sounds Strange
Occasional gurgling? Totally normal. A Boston belly makes noise sometimes, especially after eating too fast (which, let’s be honest, is always).
But there are stomach signs that cross the line into concerning territory.
Digestive Warning Signs That Deserve Attention
Bloating is the big one. A visibly distended abdomen, especially paired with unproductive retching, restlessness, and distress, is a life-threatening emergency in dogs. Get to a vet immediately.
Beyond bloating, watch for: vomiting more than once or twice, diarrhea lasting more than 24 hours, blood in stool or vomit, or a dog who is hunched and clearly uncomfortable in their midsection.
When in Doubt, Call Your Vet
The hardest part of loving a Boston Terrier is that they are so good at seeming fine. They’ll wag their tail, tilt that square little head at you, and give you those eyes even when something is genuinely wrong.
You know your dog. If something feels off, that instinct is worth acting on. Vets would always rather get a call about something that turns out to be nothing than hear about a symptom that was ignored for too long.
Catching things early is almost always better. For your Boston and for your peace of mind.