Worms in horses: bots in stomach.

Worms Cause Problems for Horses - Veterinary Medicine at Illinois

Stomach bots in horses

Horse Bot Fly

New World of Worms - Western Horseman

Buy Pharmachem ULTRAMAX Liquid Wormer for Horses

Bot flies, be gone! - Pony Club Australia

Deworming - American Association of Equine Practitioners

horse bot fly - Gasterophilus intestinalis (DeGeer)

WORMS IN HORSES, Images search

Controlling the worm cycle - EQUINE HOOF AND DENTAL CARE NZ