My Magical Menagerie

You are right, Boone, owned by @kangals, is a greyhound. Greyhounds, like other sighthounds, were bred to be super fast, super efficient hunters. To do this they need as little body fat slowing them down as possible. It is perfectly healthy and normal for sighthounds to have noticeable ribs, hips, and even spine showing. 

The way to determine whether a greyhound is skinny and fit, or malnourished, is all in the muscle. When dogs become malnourished, their bodies break down muscle and become sunken in appearance. If you look at Boone’s shoulders and thighs, you can see some gorgeous muscle definition (there are also some beautiful recent shots on his owner’s blog that really show off his meaty thigh muscles). Malnourished or starved dogs simply do not have this built physique.