Working in my flower bed this morning and my rat terrier yelps. Lots of wasps right now and they are sort of aggressive, so that is what I figured it was. But there were two little drops of blood--fang length apart--on his nose. It didn't swell much at first, but it got worse so I took him to the vet. Looked all around for a snake, but never saw one. Vet said there was definite venom sign, bruising inside the lip and hemorrhaging. They wanted to keep him; give him a steroid and antibiotic shot. I believe it was a copperhead. They are more likely to hide than a rattlesnake. And there was a very unpleasant odor; internet says that is something copperheads do. Hopefully they will call me later to pick him up, or they may keep him overnight. Poor little guy.