This young man needs to be given a stern lecture on using the proper facilities for amputation. It's quite possible that some sort of infection related to squirrels might beset his white patient.
Of course this is just a suggestion. After all, it is his territory and however he wants to behave in it is entirely up to him at the end of the day. It's not like he's trying to interfere with a protest in the tube now, is it? Otherwise we might have to really crack down on him.