The phrase "wild beast" is correct and can be used in written English.
Example: The jungle was filled with the sounds of chirping insects and the roars of wild beasts.
During the 1990s, almost all the rides were renamed: Dragon Fyre, Wilde Beast, Quixote's Kettles, Wilde Night Mares, and Viking's Rage became Dragon Fire, Wild Beast, Spinovator, Nightmares, and The Rage.
"Wild beast out of control.
A theatre was for plays; an amphitheatre was for wild beast hunts and gladiatorial combat.
"I was being asked almost to tame a wild beast without a whip," he said.
Sure enough, he got a convincingly wild beast rather than a nice bit of animation.
She seemed to be this shy girl then suddenly this wild beast came out.
"Pure and lonely as a wild beast, it guards and watches over the city".
And yet it is Dec who has been called the tiger – a wild beast in bed!
In the early 1970s, amid tales of corruption and brutality, management structures were brought in to tame this wild beast.
This one has become a wild beast, though a heraldic one, holding "the journey in its claws".
