GC,
Thats how i knew for sure was coyote scat having squirrel bones/hair from grey squirrels.
I have to tell a little story!
When i hunted near dallas,Ga. west of atlanta i would see tons of greys on the ground,eating ,running ,chasing each other.I knew that as many as there were some would have to fall victim to predators.
I'd call softly in the hardwoods and they'd sit up there and bark to beat the band.They would look my way while i was calling then start barking a few seconds after i stopped calling.
Anyway I was moving to a new area and going to eat a snack before i got to my calling location.As i looked for a spot to sit w/a good view a squirrel pounced onto the ground 20' away oblivious to my presence.I stood there and thought -this happens to coyotes i'm sure,then the thought went through my head thinking if i can even come close to catching the squirrel a coyote surely could!
I had already parked my rifle and small waist pack,so i exploded towards the squirrel like some king of a nutcase.
Initially he froze then ran maybe 5' and jumped up on a 4" diameter tree and started up as i got to the tree he was maybe 8-10' up.
I grabbed the tree and yanked on it hard letting it stop my momentum , out he came spread eagle i put my hands up but balked a tiny bit realizing this is a wild critter w/teeth and claws.
He landed on my forearm and ran up my shoulder and the back of my head leaving a couple of scratchs near my hairline and up the same tree and gone.
I thought -i hope nobody saw that and looked around and realized [shoulders back,sniff,shake head up and down=like barney fife] yuup a coyote can catch a squirrel. > Mike