How many dogs is Buck traveling with now?

In Jack London's novel "The Call of the Wild," Buck eventually travels with a pack of wild dogs after his journey takes him through various experiences. Initially, he is part of a sled team, but as the story progresses, he becomes more independent and ultimately joins a group of wolves. The exact number of dogs he travels with can vary throughout the story, but his significant transformation leads him to embrace a wild existence alongside these canines.