I have a 3 yr Appaloosa filly that keeps getting bloody and itchy ears, we live in north texas area and I was thinking is it possible she has some kind of bugs in her ears?

Yea a small pony at are barn gets bloody sometimes because we sometimes forget to put fly spray on her so try a lot of sly spray every dsy
Yes sometimes this happens to me. Put vasoline in her ears. This should keep the bugs out.
Most likely ear mites. You can contact your vet and they should be able to tell you how much wormer to give her
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