I am looking for a word meaning "of the nature of being a species." The cold and unforgiving logic of grammar suggests this word would be "specieal," but beyond not being a word, it would also be confused as a misspelling of "special."
An example of what I'm looking for would be "integral," meaning "of the nature of being integrated." In a sentence that would be, "that gear was integral to the operation of the motor."
Likewise, in a sentence I would use my new found word as such:
"Swinging from tree branches is _________ [specieal?] to Howler Monkeys."
Edit for Mitch
The word I'm looking for means something more than "intrinsic to" or "specific to." It's really not exclusive in nature. It describes something (often a characteristic) that identifies or is common to a species — even though it might also be "endemic" to another species. Let's use humans (homo sapiens) as an example. "The gift of reason is _____ to homo sapiens." Whatever the word is (and the examples below aren't bad, though each has its pros and cons), it would be equally used for "A nose central to the face and protuding to protect the nostrils is ______ to homo sapiens."