Did some research here.I have seen 2 yotes in the last 3 years.Each one went 70+lbs.They are wolves crossed with yotes.Laugh. The yotes you see out west are puny to the ones we have in the east here. Did they migrate here? My opinion is not from the west..Reason,How can a yote triple it's size from the west to the east? Breed with dogs on the way.Unlikely,If that was the case then the ones in the west would be just as big as our eastern yotes from breeding with domestic dogs.These yotes that we have in eastern states are a cross breed between wolves and yotes.Where they came from? Canada..How else can they be so big here yet so small in west states.The thing to find out if they was stalked here is to find the first sightings of them.They would have to go thru NY.before Pa. and would most likely establish that state before moveing on to Pa. They could of been introduced here in Pa. to lower the deer population but I am not sold on that yet.

http://www.wildlifetech.com/pages/necoyote.htm