What is Major’s warning to the animals?

Old Major basically says his time to die is near. He warns them that they can't keep living under the tyranny of the human. THe Human will continue to steal the fruits of their labour, man will continue to enslave them. Major urges them to rebel. He tells them not to trust anything that "goes upon two legs." He adds that, "Whatever goes upon four legs, or who has wings, is a friend... All animals are equal." OLd Major tells the animals not to rest until "man has vanished" from the Earth.