So sorry for your loss! I had a duck pulled partway under a chicken wire fence and eviscerated ( and then some...ugh!) last year by a raccoon...an awful sight to behold, let me tell you. I had thought that the fencing was secure, but saw where there was just the smallest gap under the fencing that the raccoon was able to get his grubby little claw under and pull my poor little duck out, well almost out. Yes, a fence material with very small holes like hardware cloth is a good idea, and be sure there are no gaps at all...even small ones...under the fence. I also had raccoons pull chicken wire out from a post and get in the coop! I remember someone on BYC said that chicken wire is only good at keeping chickens in, not keeping predators out! So true. I have reinforced my chicken wire fence since then with a hardware cloth layer on the lower part and I'm always checking the perimeter like a sentry....my husband thinks I'm a nut-job! lol