Cerberus.

Cerberus was a monster in Ancient Greece. The creature had three heads and poison jaws. Dog's parents were Typhon and Echidna. Their sibling was Orthrus.

Also, Cerberus was a dog of Hades, god of the underworld. They guarted the gates.

Heracles killed the three-headed dog during his last labour.

There are many paintings and sculptures about Cerberus.

Source of image:

https://www.shutterstock.com/ru/image-vector/cerberus-stylized-illustration-2-additional-versions-126266627?src=xDGn2E9DDFlEtyhfoR7FXg-1-52