Just wanted to know, is it only possible to become a werewolf in SKYRIM by joining 'The Circle' or using that cursed ring? or can you catch lycanphropy from other werewolves like how vampirism is caught from vampires?

Vampires are more easily encountered than werewolves so even if you can be infected by another werewolf it wont be easy to find one.

:disguise:

I believe you can only turn into a werewolf by completing that quest from the circle~

Once the CK is dropped, i am making wild werewolves for sure. They're badass. :celebration:

i encountered a fortress with NPC's that had werewolves locked up, most where dead but a few where alive. i tried to let the lycan beat me up. i encountered 2 vampires at the next dungeon crawl. i contracted a disease but im not sure if it was vampire or lycan i caught, because i accidentally clicked a shrine that cured me for diseases a short time after... might even been another disease for all i know.