There are many different things that will affect your pet’s behaviour. From the type and breed of animal through to how much exercise they get, how you treat them and what you feed them, there are a myriad of complex ingredients that will make your animal what it is.
Firstly, the type of animal it is. Some people will have wild animals, legally or illegally, such as lions and tigers for pets. They bring these up from a cub, ensuring they are loved and treated extremely well but are still surprised when the animal mauls a family member once it has matured. Ultimately, all animals have instincts and if a certain animal’s instincts are to protect themselves using extreme force, then they are not right to be a pet, no matter how much space or love you have.
Different breeds of dog will also be more or less likely to be aggressive or passive. However, with the right treatment and rearing, you may still be able to find what can be a very aggressive animal being extremely passive. On the flip side, the wrong treatment can make even the nicest breeds turn nasty.
How you treat your puppy will have a huge effect on what they are like as an adult and the environment they are in needs to therefore be extremely well considered, both in terms of the space they are brought up in and exactly how they are treated.
However, there is another factor that will inform how your pet will behave. The pet food you give your pet should always be very nutritionally balanced. For instance, too much energy from the wrong foods can result in pets being extremely uncontrollable, wrecking homes or even being aggressive. Too much food or food too high in fat can lead to obesity and lethargy, making your pet seem maudlin and not interested in anything. Likewise, foods with too little nutrition could lead pets to be under weight and have anxiety problems or worse.
So, whilst you should always treat your pet right, always make sure you fed them right too.