Bonjor y’all, I need help with Ethernet cable protection I’m burying

I want to bury the cable the length of about 40ft from one house to the other

I’m in West Virginia 10°F is about as cold as it gets

Would I need to run the cable through a pvc pipe or something to keep animals from chewing through it?

I get 5mbps at the moment and I don’t know what size cable I’d need for these conditions just trying to give all the info I can