hmmm...it is totally up to you, we opted to have both of our kids microchipped it was about $15.00 each, plus the peace of mind to know that if ever we were to loose one of them or were separated from them for any reason we would be able to find them again. I don't remember the brand off hand, but the company can track down the microchipped animal within 100 yards. It wasn't painful for them at all, in fact both of ours got it done the same day they went in to be neutered/spayed. They insert it like a shot in between their shoulder blades. Just my two cents!