Nowadays many people have own animal at their home, sometimes as a toy because child wants a pet or as a friend, but keeping it there makes some disadvantages.
Firstly, if you have an agressive animal at home, it can hurt someone, like a small child, who doesn't know what is it and want to touch it.
Secondly, you have to clean your's animal cage if you're having animal which should be held in cage.
Also you have to pay for any vaccination which are nessecary and for curing your pet if he fall ill. Sometimes it is very expensive.
But having animal has also good sides. Firstly, loud animal can protect your house from burglars because they can be afraid of your pet.
Secondly, animal can make you happy in many sad situations, especially dogs
To sum up, having animal at home has some disadvantages but they are not very important if you want to have a good friend.
Zapewne jest tu kilka błędów, lecz pisałem to troszkę na szybko, ale mam nadzieję, że chociaż trochę pomoże.