Tiny Round Black Bugs On Dogs. The next most obvious (though not as obvious for most of us) reason there are black bugs in your dog’s poop is an invasion of dung beetles or even black house ants. However, a closer look can help you to easily tell these insects apart.
Some beetles can be black, and small black beetles may look like fleas. Moreover, they are the little black bugs that bite in house, especially during warmer months. My dog was down in southern ohio for a week, i use frontline on him once a month.