Help identify these parasites

I see my dog Boudicca play with a critter that's jumping in the grass, I call her off and walk to that poor thing, it was a rat, still moving a little but dying.
And then I see these things attached inside its fut, others are crawling away, and under the skin still crawling so I burnt the horror.
But before that I took this photo, what are these? Did Boudicca save us from an alien invasion?

I don't know but I hope you checked Boudicca over really well for those things!

My guess would be rodent bot fly larvae.

Su Ba wrote:My guess would be rodent bot fly larvae.

I read about it, gnarly, and they can affect dogs as well as humans.
I am fascinated: how can they not trigger an acute immune response?

The picture triggered a revulsion-response in me...