werewolves
werewolves can be born or made by being bitten. they can only transform during the full moon. they live in packs with close family ties with an alpha couple as the leaders. while in human form, they are stronger and faster than humans with heightened senses. when transformed, all of these traits multiply. they become the out of control monsters of legend and pose a threat to any one not in their pack and must leave populate areas to not expose themselves. in spite of their preternatural abilities, they can still be killed by things that can kill humans, i.e. being shot, poisoned, stabbed, etc.

a werewolf can be without its pack, but it will be vulnerable. it still once belonged to one, whether the family it was born into or through the one who bit them. if they choose to break from that pack, they put themselves at risk. if they're abandoned by their maker, they are also vulnerable. finding a new pack can be a tough task, but not impossible.

note: there are drugs out there on the black market/dark web that can force a werewolf to change without the moonlight.
shifters
shifters differ from werewolves in that they can transform at will. they take a single animal form but that can be nearly any animal. please keep it to existing animals, not anything that could be classified as a mythological creature or cryptid such as unicorns or phoenix. shifters are relatively normal humans who just happen to be able to take animal form.