Looks like a fox skull,going by the snout length and eye socket shape, so I suspect a young fox going by the length .

it is certainly canine, I have a fox skull in my collection and I have had a quick comparison.

probably hit by a car then died in your undergrowth.

you have a collection seaburn ? that sounds interesting .

It looks perfectly laid out!
my old dog dug up a lambs head once......I blamed foxy for that!