For us (irresponsible idiot in the pet shop failed to separate the sexes properly) the first inkling was when we all noticed one day that Snowy didn't fit through the doorway into their shelter-box - the one placed on the lawn in the run with them - any more. read more
Re: Behavior of a pregnant pig I'm no expert on guinea pig pregnancy, but the baby girl I recently adopted is about 9 weeks pregnant and she sounds (and looks) an awful lot like your Maple. In the past few weeks I have noticed big changes in her, both physically and behaviorally. read more
If your guinea pig does get pregnant, though, the stages of her pregnancy are relatively predictable and consistent, so you always can know what to expect from her and her pups. Getting Pregnant A female guinea pig goes into estrus three or four times every year, giving her and her mate plenty of opportunities to breed. read more