[mrsmith2211 (OP)]

Sure the store was sold out of toilet paper. Now I see cats and dogs lick their but, I am not flexible enough to lick my but, not that I would want to. Thinking about bears and birds mice etc. and their cleaning habits. Why did we get so unlucky we need toilet paper?

[evan_au]

Walking upright?

[axscientist]

First of all, we should appreciate the complexity of the human brain. We have developed a sense of being sanitary and I believe that during the time when the earliest humans lived, they found out that after they constipated, their rear ends became dirty. Thus, toilet paper was born.

BUT, before toilet paper was being mass produced, our ancestors used leaves, grass, ferns, corn cobs, corn, fruit skins, seashells, stone, sand, moss, snow, water, and even hands to clean themselves after they used the restroom. When paper was invented, early Americans started using newspapers, magazines, and catalogs to wipe. 

 So I would say that no, other animals do not wipe their rear ends. But Homo Sapiens are an exception.

[evan_au]

Sometimes dogs do "scooting"...
See: https://pets.webmd.com/dogs/dog-dragging-bottom#1

[syhprum]

Chinpanzees have been recorded using leaves

[JasonBailey]

This is the strangest question I've ever seen