Bre,

not all shelters microchip. however, I know most rescues do microchip.
we microchip at the shelter where I volunteer and animals that
are re-claimed as well, of course it's optional for them to microchip, but
we do microchip, because a lot of people are losing their animals these days.
It doesn't cost extra..it does for the cats because it is optional for the cats to be microchipped as we are hoping they will be indoors..

it's included in the adoption fee with the dogs, though, as long with a free month of health insurance, a free exam from your vet that is good for 2 weeks, and we include a small bag of food as well and a identification tag.. and of course they have to leave spayed or neutered, too and we give them shots for distemper and bordetella (kennel cough) and worm them. all you have to get is rabies and if they have to be on meds because they get tapeworms or whatever, we include a copy of the med sheet to take with them to the vet.