Yes, they are. Wolverine and Sabertooth have a complex and often adversarial relationship in the comics.
Definitely. Wolverine and Sabertooth are related in the comics. They have a long-standing enmity and a connection that drives many storylines. Their interactions are a key part of the comic narrative.
Sure they are. They share a history of being mutants with a rivalry that stems from various factors. Their powers and backgrounds are intertwined in the comic universe.