Anthropomorphic canal dogs' rectums

Lot of them about. Each claiming to be the laziest dog on the Cut.

Recently, a small girl saw our dog standing patiently beside Helen, who had not realised that dogs were not permitted within the boundaries of a local sailing club. The girl, maybe 8 years old, strode defiantly right up to the back end of our dog, pointed very closely to the dog's rectum and proclaimed "You mustn't let anything come out of here because children might go blind!"

Wonder how all the anthropomorphic dogs would have responded?