hi, I have two bunnies (male and female, the male is spayed but a female hasn't been neutered yet- she's about 3 months old). the female bunny has been having soft and small poops, they stick together like grapes and smell really bad (like cat's poop). she also has regular poop, which is way bigger than those. in the past two days her pee was also darker than usual and it was really dark brown once (kinda looked like blood but I'm not sure and it only happened once). I feed her unlimited hay and give them pellets two times a day but she shares the bowl with the other rabbit so I can't really monitor how much she eats. about two days ago I gave them one of those rabbit treats on a wooden stick- she ate it all by herself. she's had really big appetite since I got he and hasn't lost it. she's also deffientally staying hydrated, what could be the problem?