There is a squirrel in my front yard who has sometihng wrong with it's back leg. It holds it up and is a little slower than normal squirrels. I noticed a lump on it and think it is maybe the botflies thing. My mom said thats just normal for wild squirrels to go through that, but I feel bad for him. Should I try and trap him and take him to the wildlife vet? And how do you trap a squirrel?