is the larger than the deer tick. This photo is an engorged dog tick ready to lay eggs.
Within two weeks of being removed from a patient, she--only the females needs a blood meal at this third stage-- laid a mass of red eggs.
The container of the eggs waits upon my desk to see if they will hatch nymphs.
We suggest that you keep clear packing tape or cellophane tape available to capture and hold a tick when found. You can bring them in to be identified.
We are on the look out for the lone-star tick, which has been moving northward in the States. It is known for causing a peculiar red meat allergy in some humans. To date the allergy has only been reported in humans, but very likely it also will affect other animals.
....And, there is no such thing as a "good tick". They all can carry some form of disease, most not identified by "modern science".