Shit that's just not cool. Though to be honest you'd have to be just a little thick to not question whether or not they were a real... real squad of whoever the heck gasses dogs to get them out of your house. I mean firstly you probably would have heard the dog and secondly animal safety laws would not allow this. If there was someone coming to get an animal from your house they'd have badges and a restrainer. But there is nothing you can do now so I'll just say that sucks man. :/