Weretigers in humanoid form have large eyes, long noses, and sharp cheekbones. Most have brown or red hair, though a few have white, black, or even blue-gray. Their movements appear careful yet casual, and a person observing one could easily assume he's watching a skilled pickpocket, graceful dancer, or sultry courtesan.
5e SRD
Humans that can transform into tigers, tall and agile hunters
Weretigers are humans that can transform into tigers. In human form, they tend to be tall, trim, and very agile. They tend to live and hunt close to human settlements, and are excellent trackers (5 in 6 chance to track prey in either form). Weretigers will typically only attack if provoked. They are capricious and arbitrary to deal with unless whatever offer is made to them is very attractive to them.
Basic Fantasy Role-Playing Game
Shapechangers with a human and an animal form.
OSE
Exhibit feline behaviour
Most weretigers are female and live much like a normal tiger does, though associating with the normal breed only 5% of the time. They can rake with their rear claws like a normal tiger. All normal cats are 75% likely to be friendly to a weretiger due to the lycanthrope's ability to speak with them.
OSRIC