Piggy poop?

[Sabrina-piggy]

Hello everybody, I just got home today and noticed that some of the poops that my guinea pigs are making are smaller than usual not bad but smaller, should I be worried? Their diet hasn't changed much besides a some oat hay and botanical hay, they are both still eating and drinking.

 

[sport_billy]

How are poo’s now? Is it one piggy or All of them?

 

[Sabrina-piggy]

How are poo’s now? Is it one piggy or All of them?

Some are still smaller but I can’t tell who it is because there are two piggies, but they are both eating and drinking and active and alert, I’m just wondering if they need more hay or what because I’m always filling it to the top, most of them are bigger but I can still see a few that are tiny.