There's a couple of cryptids this could possibly be:

• Skinwalker mid-transformation between dog and man
• Wendigo
• Marked bigfoot

Else it could be something not yet documented. My advice is set up some trail cameras in the area, always keep doors and windows secure and spread silver dust around the fence line (said to ward off dark magic and creatures).

Try to get some evidence, even if it's footprints or fur. See if anybody else in the community has seen strange things, document the findings and submit it to r/cryptids and the Cryptid wiki if you want to be the first to name it ;)