Bringing home your first dog or cat is exciting — and pet ownership comes with responsibilities that are easy to underestimate when you're starting out.
Isapet Veterinary Clinic team · 24 September 2026
Bringing home a pet is exciting. Preparing for the responsibility makes the experience better for everyone.
There's a new face at the door, a new routine in the house and, very quickly, a new family member.
Most first-time owners don't make mistakes because they don't care — quite the opposite. They're often trying their best with information from friends, social media, neighbours or previous experience with animals. The problem is that some well-meaning advice is incomplete, or simply not suitable for every pet.
Here are 10 common mistakes, and what you can do differently.
A pet needs more than food and a name. Before bringing a pet home, think about where it will sleep, where it will eat, how it will exercise, where it will toilet, and who will care for it when you're away.
You should also budget for:
A pet is a long-term commitment, so planning before the first day can prevent many problems later. It's worth estimating ongoing healthcare costs before taking on a pet.
One of the biggest mistakes is thinking, "We'll take him to the vet when something is wrong."
A first veterinary visit should happen early. For a new puppy or kitten, the veterinarian can assess general health, discuss nutrition, establish a vaccination plan, check for parasites and advise you about preventive care.
Regular wellness visits are useful too — problems can sometimes be identified before they become obvious at home.
A puppy or kitten can look perfectly healthy while still being vulnerable to serious infectious diseases. Vaccination works by preparing the immune system — the body's natural defence system — to recognise and fight particular infections.
Dogs may require protection against diseases such as rabies, parvovirus and distemper. Cats have their own vaccination needs, including protection against important feline diseases. The exact programme should be determined by your veterinarian according to age, health, lifestyle and local disease risks.
A first veterinary visit helps establish the foundations for your pet's lifelong health.
You can't always see parasites. They include intestinal worms, fleas and ticks — organisms that live on or inside another animal and obtain nutrients from it.
Puppies and kittens are particularly vulnerable to some intestinal parasites. Some parasites can also affect you, making prevention important for the whole household.
Your veterinarian can recommend an appropriate prevention programme based on your pet's age, lifestyle and environment. And don't assume an indoor pet has zero risk — some parasites can find their way indoors on people, other animals or objects.
A puppy watching you eat is very difficult to resist. Those eyes can make even the strongest owner reconsider the entire dinner plate. But human food shouldn't automatically become pet food.
Dogs and cats have different nutritional requirements from people. A complete and balanced diet is formulated to provide the nutrients an animal needs in appropriate amounts.
Small amounts of suitable treats may be fine, but regular table scraps can contribute to poor nutrition or excessive weight — and some human foods are dangerous. When in doubt, ask before sharing.
Puppies and kittens grow quickly, but that doesn't mean more food is always better. Overfeeding can encourage excessive weight gain and may interfere with healthy development.
Follow the feeding guidance for your pet's age, size and type of food. Measure portions rather than repeatedly filling the bowl whenever it looks empty. Your veterinarian can help you establish a healthy weight range and adjust feeding as your pet grows.
And remember: treats count too. The World Small Animal Veterinary Association recommends that treats make up no more than 10 percent of a dog's daily calorie intake.
Good nutrition is about more than filling the bowl. The right food and the right amount both matter.
Your new puppy may sleep on the sofa, follow you around the house and eventually become your best companion. But it's still a dog. A kitten is affectionate and playful, but it's still a cat. They have different ways of communicating, learning and responding to their environment.
Learn to recognise normal behaviour for your pet's species and age. For puppies, early socialisation — calmly introducing them to appropriate people, places, sounds and experiences — can help build confidence. These experiences should be controlled and positive, rather than overwhelming.
For kittens, provide appropriate opportunities for play, scratching, climbing, resting and exploration.
A puppy having an accident on the floor isn't being "stubborn." A kitten scratching furniture isn't necessarily being "naughty." They may simply not understand what you expect.
Good training teaches the behaviour you want and rewards it consistently. Positive reinforcement means rewarding a behaviour you want to see again — the reward might be a small treat, praise, play or another thing your pet enjoys.
Punishment can create fear and confusion without teaching the animal what it should do instead. Start early, keep training sessions short and be consistent.
Patience and positive reinforcement help pets understand what you want them to do.
Your home may be perfectly safe for you but full of interesting hazards for a curious puppy or kitten. Before your new pet arrives:
Kittens are particularly curious climbers, so look at your home from their level rather than only from yours.
Look at your home from your pet's point of view. Curious animals can find hazards we barely notice.
This tiny puppy won't stay tiny. That playful kitten will become an adult cat. Their nutritional, behavioural and healthcare needs will change as they move through different stages of life — and your responsibility changes too. A good owner keeps learning.
Review your pet's diet as it grows. Keep vaccinations and parasite prevention up to date. Watch changes in weight, appetite, behaviour, toilet habits and activity. Continue veterinary check-ups even when your pet appears healthy.
Your pet's needs change as it grows. Good ownership means learning alongside them.
Nobody becomes an experienced pet owner overnight. You'll probably make a few mistakes. What matters is being willing to learn, ask questions and make adjustments.
The simplest approach is to remember five things:
