Dogs and cats cannot explain when they are sick or in pain. Pet owners must therefore pay attention to changes in behavior, appetite, movement, breathing and normal daily habits.
Some symptoms can be monitored briefly, while others require an appointment on the same day or immediate emergency treatment. Knowing the difference can help protect your pet and prevent a manageable problem from becoming more serious.
Schedule Regular Veterinary Checkups
Pets should visit a veterinarian even when they appear healthy. Routine examinations allow the veterinary team to monitor weight, teeth, heart, lungs, skin, joints and general condition.
Most healthy adult dogs and cats should have a veterinary examination at least once a year. More frequent appointments may be recommended for:
- Puppies and kittens
- Senior pets
- Pregnant animals
- Pets with chronic medical conditions
- Animals taking long-term medication
- Certain breeds with increased health risks
- Pets recovering from surgery or illness
Young animals usually require several appointments for vaccinations, parasite control, development checks and discussions about nutrition and sterilization.
Senior dogs and cats may benefit from examinations every six months because health changes can develop more quickly with age.
When to Arrange a Veterinary Appointment
Contact your veterinary clinic when you notice a persistent change in your pet’s health or behavior.
Common reasons to arrange an appointment include:
- Reduced appetite
- Unexplained weight loss or gain
- Increased thirst
- Changes in urination
- Occasional vomiting
- Mild diarrhea
- Coughing or sneezing
- Skin irritation
- Hair loss
- Ear discharge or odor
- Bad breath
- Difficulty chewing
- Limping
- Reduced activity
- Behavior changes
- New lumps or swelling
A symptom that appears mild may still require professional evaluation if it continues, returns frequently or becomes worse.
Loss of Appetite
A missed meal may not always be an emergency, especially if a dog remains active and otherwise behaves normally. However, prolonged refusal to eat can indicate pain, dental disease, digestive problems, infection or another medical condition.
Cats require particular attention because not eating for an extended period can lead to serious complications.
Contact a veterinarian when your pet:
- Refuses several meals
- Will not drink
- Appears weak or painful
- Vomits after eating
- Has difficulty swallowing
- Loses weight
- Shows abdominal discomfort
Very young, elderly or medically fragile pets should be assessed sooner.
Vomiting and Diarrhea
A single mild episode may occur after a dietary change or minor digestive irritation. Repeated vomiting or diarrhea, however, can quickly cause dehydration.
Seek veterinary advice when:
- Vomiting or diarrhea continues
- Blood is present
- The pet cannot keep water down
- The abdomen appears swollen or painful
- The animal becomes weak
- A puppy, kitten or senior pet is affected
- Poisoning or foreign-object ingestion is possible
Repeated unsuccessful attempts to vomit, especially with a swollen abdomen, should be treated as an emergency.
Changes in Drinking and Urination
Increased thirst or urination can be associated with diabetes, kidney disease, hormonal disorders, medication effects or other conditions.
Difficulty urinating requires urgent attention. A cat that repeatedly enters the litter box but produces little or no urine may have a urinary blockage, which can become life-threatening.
Contact a veterinarian promptly if your pet:
- Strains to urinate
- Cries while urinating
- Produces no urine
- Has blood in the urine
- Begins urinating indoors unexpectedly
- Drinks much more than usual
Breathing Problems
Any significant breathing difficulty should be treated as an emergency.
Warning signs include:
- Open-mouth breathing in a cat
- Blue, gray or very pale gums
- Noisy or labored breathing
- Rapid breathing while resting
- Severe coughing
- Choking
- Stretching the neck to breathe
- Collapse
Keep the animal calm and contact an emergency veterinary service immediately. Do not force food, water or medication into a pet that is struggling to breathe.
Pain and Mobility Problems
Pets often hide pain. Signs may be subtle and include:
- Reluctance to move
- Hiding
- Shaking
- Whining
- Growling when touched
- Difficulty climbing stairs
- Limping
- A hunched posture
- Restlessness
- Changes in sleep
Sudden inability to stand, dragging the legs, severe pain or a suspected fracture requires urgent care.
Persistent mild limping should also be evaluated, even when the animal continues walking.
Eye Problems
Eye conditions can worsen quickly and may threaten vision.
Contact a veterinarian promptly if you notice:
- Squinting
- Cloudiness
- Redness
- Swelling
- Excessive discharge
- Bleeding
- A visible injury
- Sudden vision problems
- An eye that appears larger or displaced
Do not apply human eye drops unless a veterinarian specifically recommends them.
Skin, Ear and Dental Problems
Skin, ear and dental conditions are common but should not be ignored.
Arrange an examination for:
- Constant scratching
- Repeated head shaking
- Strong ear odor
- Skin wounds
- Bald patches
- Persistent redness
- Broken teeth
- Bleeding gums
- Severe bad breath
- Difficulty eating
Early treatment can reduce pain and help prevent infections from becoming more difficult to manage.
Changes in Behavior
Behavioral changes may be caused by stress, pain, neurological disease or other medical problems.
A veterinary examination may be needed when a pet suddenly becomes:
- Aggressive
- Confused
- Withdrawn
- Restless
- Fearful
- Less responsive
- Unusually vocal
- Unable to sleep normally
Do not assume that a sudden behavior problem is simply disobedience, especially in an adult or senior animal.
Emergency Warning Signs
Take your dog or cat to an emergency veterinarian immediately for:
- Difficulty breathing
- Uncontrolled bleeding
- Loss of consciousness
- Collapse
- Repeated seizures
- Suspected poisoning
- Major trauma
- Being hit by a vehicle
- Severe burns
- Choking
- A swollen and painful abdomen
- Inability to urinate
- Paralysis or sudden weakness
- Severe or continuous vomiting
- Blue, white or very pale gums
- Extreme pain
- Serious eye injuries
An animal should also be examined after a significant accident, even if it appears normal. Internal injuries may not be immediately visible.
Suspected Poisoning
Contact a veterinarian or animal poison service immediately if your pet may have consumed medication, chemicals, toxic plants or harmful food.
Do not wait for symptoms to appear.
Take the product packaging with you when possible. Do not make the animal vomit unless a veterinary professional specifically instructs you to do so.
What to Tell the Veterinary Clinic
When calling the clinic, provide clear information about:
- Your pet’s species, age and weight
- The symptoms
- When the problem began
- Whether symptoms are becoming worse
- Current medications
- Known medical conditions
- Possible injuries or toxic exposures
The clinic may advise you to come immediately, arrange a same-day visit or monitor the pet at home.
Preparing for an Emergency
Keep the following information easily available:
- Your regular veterinarian’s number
- The nearest emergency clinic
- Your pet’s medical records
- Medication list
- Microchip information
- A secure carrier or lead
Calling before arrival allows the veterinary team to prepare for the patient.
Final Thoughts
Pet owners should not wait until a dog or cat becomes critically ill before seeking veterinary care.
Routine checkups help detect health problems early, while prompt attention to warning signs can prevent unnecessary suffering and serious complications.
When you are uncertain whether a symptom is urgent, contact your veterinary clinic. It is safer to ask for professional guidance than to delay care for a potentially serious condition.