Charles Spurgeon Commentary Romans 1:23-24

"and changed the glory of the incorruptible God for the likeness of an image of corruptible man, and of birds, and four-footed beasts, and creeping things. Wherefore God gave them up in the lusts of their hearts unto uncleanness, that their bodies should be dishonored among themselves:" — Romans 1:23-24 (ASV)

It is very easy to make a beast of yourself when you have made a beast to be your god, as the Egyptians did, when they worshipped the god that they had made in the form of an ox, or a crocodile, or a cat.