no there are not
O can be Ox and N can be Netts
ostrich
Oxen Orangutan Okapi (Antelope)
orangutan
Orangutan
The oyster catcher (bird) and the orange leaf-nosed bat are animals in Australia. They begin with the letter o.
Google images
Octopus's live in Antarctica. :)
· Ox · Opossum · Orangutan · Ostrich · Otter · Old English Sheepdog
Oro Valley, a town in Pima County, Arizona.
Ocean perch and Oregon chub are sea animals that begin with the letter o. Lemon Shark and Lake Trout are sea animals that begin with the letter l.