What are Howler predators?

There is no specific animal group or predator called "Howler Predators." The term "howler" typically refers to howler monkeys, which are New World monkeys known for their loud, resonating calls.

Perhaps you are thinking of a different term or concept? Could you provide more context or details about what you're looking for?

For example, are you interested in:

* Predators of howler monkeys?

* Animals with similar vocalizations to howler monkeys?

* A specific type of predator with a particular characteristic?

Please clarify your question so I can help you better.