Here is a list of guinea pig rescue shelters in Nevada that we know of.
If you know of any more then please let us know.
Reno Tahoe Rescue Society – Based in Sparks, they provide a rescue shelter for all kinds of animals
Nevada Society for the Prevention of Cruelty to Animals – Based in Las Vegas, The Nevada SPCA, a nonprofit organization, operates a no-kill animal sanctuary, promotes humane education, makes referrals for lower-cost spay/neuter and vaccination services, and challenges people to be the best possible guardians for the companion animals in their care.