I'd say fox,, and do exactly what J-dub said,,,. and maybe lay a branch on the ground as to limit the approach angles ?? and lay a couple trail sets un-baited and as scent free as possible leading to the baited trap,,,,,now be prepared to disspatch a yote thats been caught by the hind leg,,,
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,, don't ask how I know this. also maybe leave a drop of curiosity scent on a low hanging branch above the set,,,,as they get comfy flipping your trap they'll step in to it while sniffin what the heck it was. man I miss trapping!!! JEFFW