I have two bathrooms in my condo. Both are about the size of a postage stamp. But the guest bathroom is actually a bit larger than the master, and I have had a bathroom rug in there (in front of the tub) for quite a while. It is a favorite location for Cosmos. It's softer than the tile, and conveniently located not only in front of the tub, but also in front of the pot. He can harass me from there almost anywhere I am.
After the Fab 4 broke up last week, I took Vennie's comment about there not being a rug in the master bathroom to heart. But because space is so tight in there, I got a tiny one, about 18" x 2'. It's identical in color and shape to the one in the front.
Today I was in the master bathroom taking care of - ahem - business. Cosmos came in, and there was an astonished look on his face. A rug. In his master bath! BONANZA!
But although I call him my little one, he is not a tiny dog. He squeezed himself on the small rug, turned around in circles, always to the left, and could not figure out how to fit himself on the mat. He couldn't understand it! He KNEW that he had laid on that rug before, just knew it.
The poor dog has been going in and out of both of his bathrooms since that moment. It's kind of sad. He does not understand why he fits on one of the rugs and not the other.
Sometimes it's not to easy to be a dog. And yes, size matters.