Indri indri vs indris

Indri indri and indris both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indri indri	Yes	No	No	No
indris	Yes	No	No	No

As nouns, Indri indri and indris are synonyms defined as:

Indri indri and indris: large short-tailed lemur of Madagascar having thick silky fur in black and white and fawn

Other synonyms of Indri indri include indri, Indri brevicaudatus.

Indri indri (noun)	indris (noun)
large short-tailed lemur of Madagascar having thick silky fur in black and white and fawn	large short-tailed lemur of Madagascar having thick silky fur in black and white and fawn