Answer:

horsefly

AnswerCrossword Clue
HORSEFLYAnimal twofer?
HORSEFLYBloodsucking pest
HORSEFLYNag biter
HORSEFLYBiting insect
HORSEFLYEquestrian of sorts
HORSEFLYEquine pest
HORSEFLYA freak of the animal kingdom!
HORSEFLYWinged insect
HORSEFLYPony pest
HORSEFLYEquine pest?