Insect and Spider Identification: CLOSED: What is this fast moving round bug that looks like bird poo?, 1 by Elphaba

Elphaba wrote:
I saw one of these literally running around in the front yard yesterday. Then today, I saw one in the back also walking very fast along the leaves like a lady bug would. That makes me think that it's a predator bug and I should be happy about it. I would like to know for sure though. I can't find it in my bug book, so your help would be appreciated. Roundish, looks like bird doodoo and walks around leaves continuously.

The plant it's on needs all the help it can get, so hopefully this is a beneficial bug.