Yes, all of the adult rats will generally be available for adoption eventually.
Usually, when females have had 3-4 litters (around a year old), they will “retire” and get adopted by some nice family as a pet.
Males will also get “retired” from time to time, to make room in the “boys’ cage” for new fellas.
We charge $20 to adopt one of “our” adult rats. If you are interested in an adult, you may join our waiting list for an adult by specifying that as your preference. You can also specify which adult your prefer (if you have a preference.)