Animals that start with I

I is one of the thinnest letters in zoology, since very few animal names begin with it. The one here is remarkable: the indri is Madagascar’s largest living lemur, and the only mammal besides humans known to sing in categorical rhythm. That finding was published in 2021, after twelve years of recordings. It is Critically Endangered, and has never survived long in captivity.

6 animals in the library start with I, from the ibex to the isopod. Most of them live in Africa and Asia.