Oh some canine head study ....

In the upper row

Cape Hunting Dog (or Painted dog). The most social canine. Very large round ears and Nice painting. Theyr face resembles hyenas, but they are not even closely related. It is a common mistake.

Bush Dog. Resembles hyena/marten hybrid, it is a small canine. It looks like an ancessor of all canines. Also is very primitive looking canine , so.

On the bottom row

Red fox. pretty known. Most favourite animal ever. Some people thinks they are gods :/. Their muzzles are thin with small noses. They has eliptic pupils like of the wild cats.

Grey Wolves are pretty known. The dark mask, their head is broad, muzzle is thin, long, but not as the muzzle of the fox. They are pack hunters.

Domestic Dog (German Shepherd). Dogs got thinner head, but their muzzles are broader and shorter than of the wolves. The true ancessor of the dog is an Indian Wolf, smaller, skinnier subspiecie of Grey one. But can be easily crossed with Grey wolves, of course. Much of the dog breeds are crossed with Grey Wolves. Asian breeds, Husky and others , typical is the Czechoslovakian Shepherd.

Maned Wolf (or Brazilian Wolf), They live in the South America, as Bolivia, Argentinaand Paraguay . So, last canine is not a classical canid as dogs, foxes and wolves. They got their own sub-family. Their ancessor is a similiar canid to Bush Dog. Enormous triangular ears, big noses, reddish fur and extra long legs, they looks like pins. Theyr colouring resembles a fox. Also they are pacers, they walk slowly, like a camel. They got fluffy dark manes. Maned Wolves are the tallest canines, they are over one meter high at theshoulder. They are solitare animals.

Okay, the anatomy of the heads are not so great. Sorry for my bad English .