We have a wild yard squirrel who is a super tough, alpha type boy, absolutely fearless. He is a dirty-faced grey (dark face and paws) so we named him Dirty Harry. Dirty Harry showed up a while back and looked terrible with huge swelling on top of his head and on his cheek. There was oozing goo and matted hair and he looked scary. However, his eyes were not affected, he could eat just fine and his energy level remained high. I was 95% sure it was bots even though we almost never see bots where I live. I decided to just watch him closely and to not intervene unless it turned out not to be bots. A couple days ago, my wife who was feeding the wilds yelled out "OMG, Dirty Harry is here and he looks worse!" I ran over and saw a large bot actually wiggling out of Dirty Harry's head! He ran off after getting some treats and came back a minute later and the bot was gone. I actually walked out on my deck looking for the bot, figuring I could squish it and prevent future critters from getting bit but I could not find it. I hope he heals quickly and the bot in his cheek leaves soon.
Before bot exit.
One minute after bot exit.