There are certain advantages and disadvantages to have animals as pets:-
Advantages are that they are a great companion, loyal friend, gives us a great refreshment, reduce stress, love us and protect owners from strangers & dangers.
Disadvantages are that you can't go to some places as you can't leave them alone (Commitment), their hair and certain things are harmful for us (Danger) and buying & maintaining them is costly.
It is important that only the animals which can be kept as pets should be considered for example cats, dogs etc.., as not all animals can be kept as pets for example wild animals.