We just had a rabbit die. Our favorite of course. We don't know a whole lot about what kind of diseases they can get so I was hoping someone would have a clue as to if this is something we should worry about any of our other animals catching. She was usually very energetic, hopping around in her bunny condo. Would always greet you when you opened the hatch to feed, pet, and take care of them. She would eat grass, clover, hay, sunflowers, lettuce and a bunch of things that I've checked were ok to give to rabbits. I'd top off there food every couple days and gave them greens as well. We've had her since March, she was a month old. Think she was part California giant she was getting so very big, where as the 3 others we have are all about the same size. She ate her pellets, and drank all normally before but yesterday we found her very lethargic, diarrhea, she wasn't drinking or eating much. She'd lost a bit of weight, I thought maybe the heat got to her so even with giving them fresh water morning and afternoon, ice bottles in their cages and ice cubes should they want them. We brought her inside, cleaned her up and kept her in a little while, while we set up the separate cage for her. She dried off and gave her some fresh lettuce (not iceberg, never iceberg) carrots and cucumbers fresh from the garden, wetted down some so she'd get some fluids. She perked up with all of that. Started moving a lot more, like her old self. So we put her out in her cage, set her up all nice and cozy with a planter of the growing fresh lettuce that she could munch on should she want any. The first part of today she seemed normal. Hopping around all spunky like, then settling down with the temperature climb. I did everything I normally do; fresh water, food, ice and bottle. She had reach of greens. Didn't look like she had a poopy butt. We'd check every couple hours and she was fine. We got home, checked still fine, then after eating my dad goes out and he comes back in saying "she's dying. Her back legs are stiff." She was gasping for breath, back legs so stiff, not moving other than gasping, then she arched her back and her breathing got even shallower. Stopped breathing but heart beating so fast. She died shortly after. What the heck just happened?! I made sure anything I gave them wasn't going to hurt them. When I gave them apple pieces, made sure there were no seeds.... I just am so freaking confused. Our male, Leo, is going to be so heartbroken. She was his woman.