Domestic Animals i)Some animals live in the home of men.These are called Domestic animals.
ii)Man keep them for milk,food,hunting,riding and for many other purposes.
iii)The cow,buffalo,horse,goat,sheep,etc.are some of the domestic animals.
iv)The cow is most useful of all as it gives milk and milk is a good food and from that milk we produce butter,cheese,curd etc.,
v)Men keep buffaloes for milk and for drawing carts and ploughing the field.
The sheep is kept for its hair and flesh. The hair is made into wool. This wool is used in making warm clothes.
The horse is kept for riding. Some horses draw carts and carriages, plough the field and carry loads. Some horses are trained to run races. A race horse sometimes brings a large fortune to its master.
The camel is kept by the people of the desert. It is very useful to those people. They get its milk and flesh. It is the only means of transport in the desert. Hence it is called the ship of the desert. 
The dog is a very faithful animal friend to men. It guards the house of its master. It is used in hunting. Some dogs are trained to detect criminals.
These domestic animals are all useful to men. Hence they should be treated kindly. They should be properly fed and taken care of.

1 the help in maintaining the balance in the ecosystem
2 dogs saves us from theft by barking and they are faithful
3 cows , buffaloes etc give milk
4 ox are used by farmers in the field
5 cats helps us by chasing rats
6 animals like tiger have very high medicinal value 
7 sheep can be used to obtain wool
and there are many such uses