Describe the life of the animals on Animal Farm?

The animals in the book, "Animal Farm" are standard farm animals (pigs, cows, chickens) living a life of oppression under a human master, Mr Jones. He is a normal farmer, selling eggs and beef. But to the animals this is slavery. They try to survive until one day an old pig called "major" tells them of revolution, they all revolt and force Mr Jones out. The whole book is based on the Russian revolution with certain animals representing certain political leaders (snowflake=Lenin, Napoleon=Stalin) the key point to the story is that the clever pigs take over and the farm thinks that life will be better, until the pigs become like the humans and life gets seemingly worse. disobeying all the rules they set out just after the revolution. For example, "all animals are equal" becomes "all animals are equal, but some are more equal than others"