Bunny Bathroom Problems?

I read online somewhere that rabbit owners are obsessed with their rabbit’s droppings. I, of course, thought that was gross. Why would I want to investigate Walter’s litter box all day long? Ew.

As a rabbit owner, I pay a decent amount of attention to what’s going in Walter’s litter box. At the vet’s office, Dr. Pilny asked if I noticed excessive urination or if the litter box felt heavier than usual when I went to clean it. I answered honestly that I had no idea; the box could feel heavy due to a greater amount of urine… or I could have just been a day or two behind schedule in cleaning the litter box.

But in the last twenty four hours, I’ve been paying really close attention to Walter’s droppings, and this is where I need some help. I’ve noticed the color has changed. Normally, it’s a dark brown. In the last day, it’s been gray. Aside from color, everything else is the same – same size, same consistency, same amount and frequency. What could be causing the color change?

I’ve also noticed that Walter is not eating his pellets. I gave him some mint on Saturday that he was only mildly interested in, but his pellet intake is much lower than usual. He’s done this before – in the past, it’s been his way of telling me he wants a new variety of greens, and that could very well be the case this time. I’ll pick up some fresh veggies on my way home tonight to test this out.

Aside from the color of his droppings and Walter’s disinterest in pellets, he seems to be normal. He’s been hopping around, snuggling, trying to dig his way into the bedroom (which is occasionally off-limits, though he’s been known to sneak his way in), and chewing on his honey-hay log.

So, any ideas what’s going on?