What could cause a brown vertical line and horizontal ridges on one side of only one fingernail? Dr. Richard Zimon Dr. Zimon More info needed: Sounds like you damaged the nail bed at some point in time.
As tigers are related to cats it would mean that mean that they are feline. A canine is a dog so tigers aren't canine. 2 people found this useful.
Big cats -- lions, tigers, jaguars, and leopards -- cannot purr. However, they can roar, something a domestic cat is unable to do (just imagine!) In fact, no cat can both roar and meow.