Gale

Gale is one of the eight sled dogs you can adopt at the beginning of the game.

Gale's Quest
When a porcupine runs off the trail, Gale chases it. Despite your warnings, she lunges at it and gets a nose full of quills even after the musher says "see, they have a worse busniess end than skunks". This doesn't count as an injury, but you do need to pet Gale at camp to progress her story and tell her not to rush into things, especially with quills.

When you find the porcupine in the tree, Gale will leap at the trunk and bark at it. If you've already completed the first event, you will be able to call Gale off and praise her for learning.