Animals like your hero, and won't attack him unless he attacks them first or they are enraged for some reason. His “animal magnetism” is so great he's attracted a loyal animal of some sort as well. This is typically a dog, wolf, or raptor, though the GM may allow other companions if it fits the setting.

The beast is an Extra (not a Wild Card). If it should be killed, the hero finds a replacement in 2d6 days.

Savage Worlds Deluxe Edition p. 45