Read below for information on different animals that start with the letter O, from ocelot to oyster. The most popular animal that starts with the letter O is the ocelot, a small cat also known as the painted leopard. The least popular O animal is the orangutan. Some can grow to be up to 200lbs, making them one of the largest primates in the world. Some fun facts about letter O name animals are:
- Opossums are believed to be immune to some snake venom
- With males growing over 9 feet tall, ostriches are the world’s largest bird
- Otters hold hands while sleeping to avoid drifting apart while in flowing water