Recently I had to put down my beloved pig Mildred. She started acting strange and went I noticed blood in her urine I rushed her to the vet the next day. They did an x-ray and she had a bunch of tiny bladder stones all over her bladder. I talked to the vet and the most humane corse of action was to put her down. I fed the girls a diet of orchard grass hay (I am super allergic to timothy hay and orchard grass is the best alternative), Adult guinea pig pellets (1/8 cut per pig), 1 Oxbow vitamin C treat a day and fresh veggies. Her absolute favourite was lettuce so she ate a lot of it (romaine or green leaf). She would also eat red pepper, cucumber and carrot and some herbs. Anything else she was rather picky with. So I'm wondering if maybe her diet had something to do with the build up of the stones or was it something I couldn't control. I would even use reverse osmosis water in their water bottles just because tap water can have too much calcium for them. If there is anything I should avoid for my three other cavies then please let me know because if theres anything I can adjust I will gladly do it?