I've been roaming the remote areas of southern New England (Ma/Ct/Vt/NH) & eastern NY state since I was a young boy. I've seen, literally, hundreds of coyote & coydog in my time outdoors. I'm not a wildlife biologist by any means, but I do know wildlife quite intimately & IMHO there has been big increase in the populations here. Not only in the back country areas, but also in the suburbs of our metro areas (I've even seen a few in the city Springfield, Mass which has quite a few wooded areas). As far as a hybridization of coyote & wolf, I would have to go along with that hypothesis. Over the past decade, I've observed a number of canids that are definitely larger than those seen years ago. Some have been in the 60 - 70 lb range. As far as the large cats, we absolutely have them!! Caught a glimpse on more than one occasion. One of my encounters Mass Wildlife told me it was probably a bobcat!! Fhooey on them....a bobcat doesn't have a tail that's as long as it's body!! Have seen a lot of huge feline tracks to back up my claim. On one of my encounters, I saw what seemed to be a momma carrying her wee one by the scruff. The outdoors column reporter for the Springfield Republican has been getting reports on mountain lion/catamount/puma sightings for quite a while, as well. Yep....they're here & I am thrilled about it!! Majestic creatures!!!