So yesterday I discovered that some of my rabbit's poop had like small poop strings sticking them together. And some were small and really dark. She kept grinding or like making sounds with her teeth. But she has been more active than usual. More clingy. Help? Some things you maybe wanna know. She lost her sister around 2-3 months ago. When I saw this I removed all her pellets and then next day the poop seemed fine, but still making sounds with her teeth when I'm not petting her? She has been urging to bite stuff. And I can NOT go to the vet .