What is this?

[BobaTheGuineaPiglet]

I just found this in my Guinea pigs cage, Idk if it was from their hay, or if he passed it overnight. I refill their hay everyday and maybe this stone was hiding in there?

He seems perfectly fine and normal. Nothing out of the ordinary, normal behavior/eating habits/etc. But what the heck is this stone !? Freaked out currently.

 

[Wiebke]

I just found this in my Guinea pigs cage, Idk if it was from their hay, or if he passed it overnight. I refill their hay everyday and maybe this stone was hiding in there?

He seems perfectly fine and normal. Nothing out of the ordinary, normal behavior/eating habits/etc. But what the heck is this stone !? Freaked out currently.

Hi
It looks to me rather like something fallen out of a hay bag? Bits of soil can sometimes be picked up during harvesting.

 

[BobaTheGuineaPiglet]

Hi
It looks to me rather like something fallen out of a hay bag? Bits of soil can sometimes be picked up.

Omg phew. I figured but wanted to be 100% sure. Thank you!

 

[Wheekallweek]

We've found all sorts of weird stuff in hay over the years

 

[Free Ranger]

Looks like a lump of soil to me too. Esp if it felt dry to the touch.
Mine are indoors so the first time I found a giant slug on the mat I was gobsmacked - but turns out it had come in on some grass hubs had fetched in... pigs had eaten all the evidence and must've just worked around sluggy who was left sitting there on a mucky mat
(I did put him back outside)