Wolves infected with a common parasite are more likely to lead a pack. Infected animals are also more likely to leave their home packs and strike out on their own.
The parasite makes its hosts bold — a mechanism that increases its survival. To reproduce sexually, T. gondii must reach the body of a cat, usually when its host is eaten by one. Think cougars, not house cats!

#parasites #wolves #mountain lions #cougars #packleaders #toxoplasmagondii #braininvasion
https://www.nature.com/articles/d41586-022-03836-9