These are real carrion crow (Corvus corone) jaws! They are native to western Europe and eastern Asia, though this particular specimen is from Europe.
These jaws measure ~3" long.
In most of North America it is a crime to buy and sell our local crow species, so we are happy to offer legal exotic alternatives. These crows can grow so large that they are often mistaken for being a raven. We can ship these crows worldwide!