Would a bunny drinking bottle be better? I would be concerned if a stone in a bowl broke a tooth, Olly drinks quite fast and I tell him. “Calm it down boy.” and he does, I think if your bunny was having trouble breathing he would stop, he won’t get pneumonia from drinking to fast, lungs do fill up with water with Pneumonia, but it is air sacs that fill with fluid or pus, not water we or animals drink, because it goes straight down the esophagus into the tummy, just like food, yes there are choking hazards, but we or animals cannot get pneumonia from drinking water, pneumonia is a disease of the lungs which is inflammation of the lungs , which starts off as a bad cold or flu, then pleurisy (Which I get) then if not treated it can turn into pneumonia, the fluid is a bit like if you have Eczema and it gets sore then blisters then blisters burst and there is water, its not like water from taps or bottles.