They're animals. If you can't figure these words out, don't use them. Write without contractions-> "They are animals."
The problem with calling such subhumans animals is that it really libels many very good a useful animals, like my two wonderful dogs and one cat and the nice black snakes in my yard that keep the vermin down. Any of those is better and safer to live with than the decedent here and his ilk.
If you don't know how to use HTML...don't use it.