I was watching something that involved coyote attacks on armadillos. It appeared that coyotes would go after the smaller armadillos and still have problem going through the shell. One of my dog has a head that is oversize for his body, crushes them without a problem. Think one reason that armadillos are getting larger is in part as defense against coyotes and smaller dogs. Likely the extinct eastern red wolf would of had no trouble killing them.
But coyotes in some locals that have eastern wolf or dog genes are getting bigger and 60 lb coywolves and coydogs or a mixture of all exist. But coyotes will kill turkeys also. There is very little that a coyote will not eat and I have had them climb pear trees to strip all of the pears off. I tracked them the next down to the creek where they had diarrhea leaving piles of pear poop. At 2 AM in the morning I woke and heard them going after the pears, but there was no way that I was going out there in darkness unable to see.