I don't think that is just a human thing either. Frankie in my avatar sometimes falls off things when he is climbing - he just lies there crying and then comes for a cuddle. His sister is made of much sterner stuff and won't let a little accident stop he.
Us blokes havent got a chance! I am bed bound with Chest, Ear and Throat infection, have been since Sunday, and all I keep getting off the female members of the family is "Man Flu!!"