How do you know if your dog or cat is healthy?

A healthy pet often shows this in small, everyday things. But how do you know if your dog or cat is feeling well and is healthy? By getting to know your pet well and paying attention to changes in behaviour, appetite, weight, and appearance, you can spot many signs early on.

In this article, you'll discover what you can look out for at home regarding your dog or cat's general health and which signs may indicate that extra attention or advice from a vet is needed.

In this article

How do you know if your dog or cat is healthy?

📅 Last updated: September 15, 2026 ⏱️ Reading time: 5 minutes

Intro

A healthy pet often shows it in small, daily things. Bright eyes, a normal appetite, a well-groomed coat, an appropriate weight, and behavior typical for your dog or cat can all indicate general well-being.

But every animal is different. What's normal for an energetic young dog may not be the same for an older cat. That's why it's especially important to know your pet well and to notice any changes from their normal behavior.

In this article, you'll discover which signs you can observe at home and what to look for when assessing the general health of your dog or cat. We'll discuss behavior, appetite, weight, coat, eyes, ears, and movement, among other things.

Important: these signs give a general impression of your pet's well-being and cannot replace a veterinary check-up. If in doubt or if you notice significant changes, it's wise to seek professional advice.

1. Why you should get to know your pet well

One of the best ways to notice changes in your dog's or cat's health is to know what is normal for your pet.

How does your dog behave on a normal day? How enthusiastic is he during a walk? How much appetite does your cat normally have? What does their coat look like? And how much does your pet usually sleep?

When you know these normal patterns, changes will be noticed more quickly.

This does not mean that every change immediately indicates a health problem. For example, an animal may temporarily behave a little more calmly after a busy day. But a clear or persistent change does deserve attention.

During a health check, veterinarians look at, among other things, the general impression, posture and movement, body condition, skin and coat, eyes and ears. Behavior and appetite can also provide important information.

💚 Pawlio fact

You often know your pet better than anyone. By regularly consciously observing what is normal for your dog or cat, you can recognize changes more quickly.

2. Behavior and energy level

Behavior is an important part of your pet's overall well-being.

A healthy dog is generally alert and responsive to its environment. It shows interest in its daily activities and exhibits behavior consistent with its character and age.

For cats, it's also important to observe their normal behavior. A cat that enjoys playing, climbing, or seeking interaction usually shows that it feels good in a different way than a calm or reclusive cat.

Therefore, pay particular attention to changes from normal behavior.

For example, consider:

  • sleeping significantly more than usual;
  • suddenly less interested in playing or walking;
  • withdrawing more often;
  • unusually restless behavior;
  • sudden changes in character;
  • less responsiveness to the environment;
  • difficulty moving or getting up.

A single quiet day, of course, doesn't necessarily mean anything. It becomes particularly important when a change is clear, persistent, or combined with other signs.

💚 Pawlio Fact

Not every healthy dog is energetic, and not every healthy cat is playful. The most important thing is what is normal for your individual pet and whether anything suddenly changes in that.

3. Appetite, Thirst, and Digestion

Even your pet's daily feeding routine can reveal a lot about its well-being.

A change in appetite isn't always serious. Some animals may temporarily eat less due to stress, heat, or a change in their environment, for example. However, a significant or persistent change is something to keep an eye on.

For instance, pay attention to:

  • suddenly eating less or refusing to eat;
  • eating noticeably more than usual;
  • drinking significantly more or less;
  • repeated vomiting;
  • persistent diarrhea;
  • changes in stool.

In cats, a reduced appetite is especially important to take seriously. A cat that doesn't eat can develop health problems relatively quickly, so it's wise to contact a veterinarian if there's a clear or persistent refusal to eat.

Noticeably increased drinking or urination can also be a reason to consult your veterinarian, especially if this is new behavior.

💚 Pawlio Fact

Changes in eating or drinking behavior can start subtly. That's why it's helpful to have an idea of what's normal for your pet.

4. Weight and body condition

A healthy weight is important for the well-being of dogs and cats. Both overweight and underweight can have consequences for their health.

But the number on the scale alone doesn't tell the whole story.

Body condition also plays an important role. This includes looking at body shape and the amount of body fat and muscle mass.

For example, with a cat, one looks at the waist and how easily the ribs can be felt. With dogs, too, body condition can provide better insight than just weight alone.

It is therefore wise to regularly monitor your pet's weight and not simply ignore changes.

Unintended weight loss or a significant weight gain can have various causes and deserves extra attention when it is unexplainable.

💚 Pawlio fact

You don't have to wait until your pet has visibly changed. Regularly weighing your pet and occasionally consciously checking their body condition can help to notice small changes earlier.

5. Coat, skin, eyes, ears, and movement

You can also tell a lot about your pet's overall well-being from their appearance and how they move. By regularly and consciously observing your dog or cat, you'll learn what's normal and notice changes more quickly.

Coat and skin

A healthy coat usually looks well-groomed and appropriate for the animal. Pay attention to excessive hair loss, bald spots, flakes, redness, wounds, or a change in the coat's texture. Frequent scratching, licking, or biting at certain areas can also be a sign that something is amiss.

In cats, it's also notable if the coat is less well-groomed than you're used to. Since cats normally groom themselves extensively, a sudden change in their grooming habits can be a reason to be extra vigilant.

Eyes and ears

A healthy pet's eyes should appear clear and clean. Pay attention to changes such as noticeable redness, swelling, excessive tearing, or discharge.

The ears also deserve regular attention. A strong odor, excessive earwax, redness, or noticeably frequent scratching at the ears can indicate a problem that needs further investigation.

Always assess changes in comparison to what is normal for your dog or cat.

Movement

The way your pet moves can also tell you a lot. For a dog, pay attention to getting up, walking, running, climbing stairs, and playing. For a cat, you can observe jumping, climbing, playing, and moving around the house.

If your pet suddenly moves less, has difficulty with certain movements, walks differently, or starts avoiding activities they normally enjoy, it's wise to take this seriously.

A change in movement isn't always clearly visible. Sometimes you first notice it because your dog is less enthusiastic about going for walks or because your cat jumps onto her favorite spot less often.

💚 Pawlio fact

You know your pet best. By regularly observing their coat, skin, eyes, ears, and movement, you'll learn to recognize small changes more quickly.

6. When is it advisable to consult a veterinarian?

You don't need to be alarmed by every small change. At the same time, it is important not to ignore clear or persistent changes.

Contact your veterinarian if, for example, you notice that your dog or cat:

  • is clearly eating less or no longer eating at all;
  • is drinking or urinating noticeably more;
  • is repeatedly vomiting or has diarrhea;
  • is losing weight for no apparent reason;
  • is clearly less active or noticeably sluggish;
  • is having difficulty breathing;
  • is suddenly moving differently or seems to be in obvious pain;
  • has new swellings, wounds, or other noticeable changes;
  • or if you simply feel that your pet is not themselves.

In the event of severe or sudden complaints, it is important not to wait and to seek professional advice immediately.

A veterinarian can assess what is going on through physical examination and, if necessary, additional tests. Therefore, trying to determine yourself what ailment is causing a certain symptom is not wise.

💚 Pawlio fact

You don't need to know exactly what's wrong to ask for help. If you notice that your pet is clearly different from normal and you are unsure, consulting a veterinarian is always a wise step.

7. Frequently asked questions

How do I know if my dog is healthy?

Look at the overall picture: normal behavior, an appropriate appetite, a stable weight, a well-groomed coat, clear eyes, normal movement, and a general well-being that is characteristic of your dog.

How do I know if my cat is healthy?

Pay particular attention to changes in behavior, appetite, drinking, weight, coat, eyes, ears, movement, and litter box habits. Cats can sometimes show health problems subtly, making it extra important to know their normal behavior well.

How often should I check my pet?

A short daily observation doesn't have to be an extensive examination at all. During feeding, playing, walking, or petting, simply observe their behavior and appearance. Regular health check-ups at the vet are also an important addition.

Is a lot of sleeping normal for a cat?

Yes. Cats naturally sleep a lot. More important than the number of hours of sleep is a clear change compared to your cat's normal behavior.

When is weight loss concerning?

Unintended or persistent weight loss warrants attention, especially when it is accompanied by changes in appetite, drinking, behavior, or other complaints. Discuss this with your veterinarian.

Can a beautiful coat mean my pet is healthy?

A healthy skin and coat can be a positive indicator, but they don't tell the whole story. An animal can also have health problems without obvious external changes. Therefore, it is important to look at the overall picture.

Can I assess my pet's health myself?

You can observe a lot at home, but this cannot replace a complete health check-up. In case of doubt, persistent changes, or complaints, professional advice is important.

In summary

You cannot tell if a pet is healthy by a single characteristic. It's about the overall picture and, most importantly, what is normal for your dog or cat.

Regularly pay attention to:

  • behavior and energy level
  • appetite and drinking habits
  • weight and body condition
  • coat and skin
  • eyes
  • ears
  • movement and general well-being

By knowing your pet well, you often notice changes more quickly. This doesn't mean every change is immediately a health problem, but striking or persistent changes do deserve attention.

And perhaps most importantly: you don't have to be a veterinarian yourself to take good care of your pet. Good observation, taking changes seriously, and seeking professional advice in time are valuable components of good care.

🐾 Pawlio expert advice.

Above all, learn what is normal for your own pet.

A healthy dog or cat doesn't have to be the same every day. Age, personality, activity, and environment all influence behavior and well-being.

That's why it's important not to just look at individual symptoms, but at changes in your pet's normal pattern.

Good daily observation, appropriate care, and regular veterinary check-ups together form a strong basis for preventive care.

When in doubt, it's better to ask for advice once too often than to ignore a clear change for too long.

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At Pawlio, we believe that every pet deserves a comfortable, healthy, and happy life. That's why we share reliable knowledge, practical tips, and carefully selected products that contribute to the well-being of dogs and cats. This way, we help you confidently make the best choices for your loyal friend.

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Discover even more practical information and expert advice on the health and well-being of your dog or cat. View all articles from the Pawlio Health Guide and learn how to recognize changes and provide your pet with the right care.

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