list of animal names starting with the letter “O” February 22, 2025February 22, 2025 by wordsuniverse Ocelot Octopus Okapi Opossum Orangutan Orca Ostrich Otter Owl Osprey Oryx Ox Oyster Oarfish Ocean Sunfish Olive Ridley Sea Turtle Onager Olingo Owl Monkey Orange Clownfish Oriental Stork Owl Butterfly