People haven't the slightest modicum of common sense, really.  Tourists bring Fluffy and Foo Foo into country which is still somewhat wild, fail to look after them, and then get all butthurt when evil befalls them.  

Now, if this wolf was attacking pets on a leash when the leash was in the hand of a human, I agree there are concerns.  

On the other hand, if the wolf was eating pets which were tied up overnight outside Henry's and Martha's Winnebago, then, well, you can't blame wolves for acting like wolves.  It's like the goat staked out for the T. rex in Jurassic Park.  It's wilderness smorgasbord.

And of course, your dog should never, ever, be off leash in a place like Pacific Rim, but Henry and Martha don't get that.  He is liable to come running back to you for protection, with a bear in hot pursuit, or that big yellow kitty.  I think I'd prefer the bear.