Don't know if you are familiar with this nasty little creatures. They are called Acari or mites. They are coming on humans and pets. Earlier tonight I found one of these on my dog. We have a special forceps to take them off. They bite the skin and stay there until they are removed. I got a injection couple of years ago for protection from them. The dogs got medicine so that they are protected against Acari. We gave dogs their medicine shortly after we had removed it. I have heard that some of these can have Lyme disease. It's pretty dangerous if a human it's bitten by a Acar that carry it. I have also heard that people can die of it. So it's nothing to play with.