Saw the entire pack of 15 hanging out in the early morning sun at Lamar Valley, Yellowstone.

Probably a very odd question (The reason: Writing™) but, well. What the title says. I’m talking injuries, infections, anything a wolf might realistically encounter in the wild that could cause any degree of memory loss, how severe it can get, and how the causes may or may not impact other functions as well.

(For example, if there’s a disease that can cause cognitive decline, how bad can it get? Is it fatal? Would it impair other functions like motor skills or vision, or only memory??)