This bland colored beetle is a Gold & Brown Rove Beetle (Ontholestes cingulatus). They are found throughout North America and are associated with dung, carrion and other nasty's. The adults do not feed on poo....they are there to feed on the insects feeding on the poo. The larvae however do...so therefore they are often found in these excrement's feeding on insects or laying eggs. They are one of the largest rove beetles in North America and are all brown with golden coloration near the thorax and on the last abdominal segment. This golden segment has a glowing appearance when first seen that reminds a person of a lightning bug. I have been finding a lot of these beetles on cow dung in out pasture. There are at least two per pile and they seem to prefer fresh dung. The cow patty's that are a day or two old will have no rove beetles on them.
These beetles are incredibly fast and difficult to approach and photograph. I managed two decent photos out of numerous attempts. They race quickly underneath the poo and disappear, sometimes never to be seen again. I draw the line at flipping cow patty's to get at these beetles. I prefer to wait patiently and hope for the best. It just goes to show you never know where you will find interesting insects. :o)