Here is a list of different animals that start with the letter I.

Ibex

Ibis

Ibizan Hound

Icadyptes

Icelandic Sheepdog

Ichthyostega

Iguana

Iguanodon

IMG Boa Constrictor

Immortal Jellyfish

Impala

Imperial Moth

Inchworm

Indian Cobra

Indian Elephant

Indian Giant Squirrel

Indian Palm Squirrel

Indian python

Indian Rhinoceros

Indian Star Tortoise

Indianmeal Moth

Indigo Snake

Indochinese Tiger

Indri

Inland Taipan

Insect

Insects

IO Moth

Irish Doodle

Irish Elk

Irish Setter

Irish Terrier

Irish Water Spaniel

Irish WolfHound

Irukandji Jellyfish

Italian Greyhound

Ivory-billed woodpecker

Ivy Bee