Well, it looks like Pixelfixed has forgotten about this thread, so I did a little googling and found that a whole slew of animals have an oosic, also known as a baculum and os penis:

Primates like the gorilla, marmoset, chimpanzee, etc but not in humans or spider monkeys.
Rodents like rats though not in the related order Lagomorpha (rabbits, hares etc.).
Insectivores, including moles, shrews, and hedgehogs.
Carnivores including bears, cats, dogs, walruses, seals, sea lions, raccoons, minks, coyotes, badger, red fox, otters, weasels, skunks and others).
Chiroptera (bats).

The baculum of the marmoset is around 2mm long, apes under 20mm, bush-baby 13mm, raccoon over 90mm.

The word 'oosic' tends to be used for walruses, sea lions, polar bears.

From what I can gather, the penile bone of the raccoon or possum is referred to as a 'Texas Toothpick.'

Regards,
Neil