String of pearl-poop and oval poop are signs of gut slowdown. Cowpile syndrome (megacolon) is a more serious condition. Megacolon buns tend to have frequent episodes of painful gas and shapeless poop. They also have trouble keeping weight on due to malabsorption of nutrients.

I think perhaps you are overthinking a little bit. Your bun’s poop looks nice and full of hay 💚 He could have a little slow gut, innervation of the gut is very complex. I dont think this is cause for alarm though. It’s very good that you brush him often, keep doing that.

I agree, nice hay poops there! Because they are not too much larger then his round ones, I don’t think its cause for concern. Some will produce ovals poops now and then. If it were 2-3 time larger or if was quite wet, then Id be more inclined to think something was amiss.

You bunny is all black, correct? If so, then he would be en en, not En En. En En is what people often refer to as a Charlie. They are almost all white, with color on their nose and ears. Megacolon is tied to the “broken” gene, which creates the broken/spotted pattern in rabbits. Two copies of the dominant form (En) is what puts a rabbit at risk of having megacolon. Here is a nice article from MediRabbit, complete with pictures of poop: http://www.medirabbit.com/EN/GI_diseases/Mega/mega_en.htm

I agree with the others. The poop in your photos looks like normal hay-filled poop to me.