Worms in Pig Fat?

Yesterday, we slaughtered our first hog which is a kunekune. They have a ton of fat which I’m rendering but have found a few brown sort of balls in some of the fat.

While harvesting, I separated any fat with blood, hair, etc from the pure white fat. I only see these in the fat that isn’t as clean. Are these worms? Is there a reason I can’t render and use the lard?