A very tiny creature living in long grass but which can be carried into homes on clothing or the coats of dogs. Can give a very irritating bite.
If you live in an area where this is common, put a proprietary insect repellent on wrists, cuffs, and legs before venturing into the long grass. Anti-histamines will relieve the itching.
Dogs should be treated with a veterinary product labeled for mite control.
For more information also see Mites.