I have two guinea pigs both boys One of them is having normal poop the other is having a mixture of light and dark poop they share the same diet which is a bunch of hay 1/8 cup of pellets each and one cup veggies for each of them usually has been romaine lettuce red lettuce parsley and then have slowly added different ones each day like peppers kale and or cucumber (some of these I don't really do a lot of cuz I know they're mostly made of water) but from what I've done research on it's saying for to back off veggies and I needed to know if this was the case? And for how long he's eating a lot of hay and drinking water as well and his behavior has been normal. Also the texture of the poop is the same as the regular poop it's not slimy nor stinks nor is soft I wasn't sure if this was the poop that they usually eat to get nutrients that is mostly from the veggies they eat after
Hi and welcome
Over three quarters of what a piggy eats in a day is hay/grass fibre.
Your poos are all healthy looking and no reason to worry. Poos containing more fresh food/veg tend to be darker; poos that consist mainly of hay/dry food can be a bit lighter. This colour variation is not unusual, as piggies don't eat fresh food all day and is nothing to worry about; but the natural colour variation in their poo output has been used in previous years for explaining the concept of poo eating in guinea pigs, erroneously following the example of rabbits.
However, recent research has shown that guinea pigs don't produce special poos for eating (caecotrophs; the digestive system in cavies (who are rodents) is a bit more primitive than in rabbits (who are lagomorphs and whose digestive system is closer to that of horses than to rodents; they produce special poos for redigestion in the caecum, the last fermentation chamber of the gut, hence the name for their redigested poos).
Guinea pigs simply eat part of their normal poos (they are therefore coprophages - 'poo eaters') and produce the same poos in both runs through the gut; the poos they eat therefore don't look any different.
More information on the digestive system of guinea pigs can be found in this link here:
Wiebke's Guide to Poops
An overview over digestive problems can be found in this guide here:
Wiebke's Guide to Tummy Trouble
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