How do you know if a guinea pig is too skinny?

Answer 1

If you can feel ribs with no roundness protruding around them, and the guinea pig is acting sluggish, perhaps not eating much, maybe consider asking a pet-aficionado (eg. an employee at a pet store, a knowledgeable friend) or a vet clinic to check over your pig. A common misconception is that lettuce and celery are good for guinea pigs, when in reality, these contain too much water and may cause diarrhea (which may be leading to this skinny-ness/poor health you're hinting at). Make sure you're feeding some good-quality pellets, and that your guinea pig is getting Vitamin C everyday in extra's you give it (fruits/veg), as Guinea pigs are one of the only animals who cannot synthesize their own Vitamin C. I read that one of the most common illnesses in Guinea Pigs is scurvy. Could this be happening with your pig? Good luck!