describes someone whose character is extremely low and despicable, even worse than animals; literally "not even equal to a dog or swine"

Even more despicable than a dog or swine; used to describe a person with extremely low character or morals.

describes someone so despicable and low that even dogs and pigs would refuse to eat their flesh; an idiom used to condemn a person of extremely poor character

To behave in a despicable or vile manner; describes a person whose conduct is as base and disgusting as that of an animal.