Bits in the heat pits

So a random question to throw out to my much more experienced bp mates. Looking at my little guy I noticed he has little bits (like in one or two spots) in his heat pits. They don't appear to be lodged there and I know they aren't those little buggers. (mites) I was just wondering if it was any cause for concern or is it just something he will either wash out his own when he goes for a dip or something that may just fall out?

Hi,

We really need pictures to even begin to guess.


dr del

Pictures needed, but maybe its stuck shed?

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It turns out it was just little bits of aspen (dark bark looking bits) and they came out when he went to get a drink and dipped his head into the water. I pulled him out and inspected and he was all clear. Sorry for not posting pics of it. Didn't think about that when I made the topic.