Dogs are the most diverse mammal species on the planet (http://buff.ly/1pxxt0k). They can vary in weight from 6 lb (3kg) to 200 lb (90kg) when fully grown and have widely differing body shapes and hair types.
The problem solver works until he/she finds a solution. See the video below:
The opposite character in the video below just could not do it:
How a Doctor Almost Killed Her Dog - ibuprofen, the key ingredient in Motrin, poisons dogs. NYTimes.