Don't Rely -- VERIFY! No matter what anyone tells you, verify the sex of your guinea pigs BEFORE you put them together -- especially if you got your guinea pig from a pet store. Pet stores are notorious for getting it wrong frequently -- all kinds of pet stores -- from Mom and Pop stores to the...

UNLIMITED Timothy Hay (or a grass hay) is required for guinea pigs. Hay is not just a treat! For young cavies under the age of 4 months and pregnant or lactating mothers, alfalfa hay is also recommended. For those cavies, you could mix half Timothy and alfalfa. Since alfalfa hay is a legume, not...