Kate had several encounters with a black horse.
Kate first encountered the horse after being captured by the Marshal at a bus station while buying a ticket to Tallahassee, FL. The horse was standing in the middle of the road and caused the marshal to swerve and hit a tree, letting Kate escape.
She later saw the horse, or one identical to it, on the Island while she was picking fruit. She told a semi-conscious Sawyer about what she assumed to be a hallucination and later asked Charlie if he had seen horses on the Island. He hadn't.
After leading Sawyer out of the Swan for a breath of fresh air, Kate saw the horse again and this time even petted it. Sawyer saw it as well, proving it no mere hallucination.
Charlie later referred to the horse after Locke interpreted his visions as evidence of drug use. "Kate sees a horse -- nothing," he said. "Pretty much everybody's seen Walt wandering around the jungle. But when it's Charlie it must be the bloody drugs, right?" ("Fire + Water")
Sawyer talking to Kate on the beach, later referred to their shared sight, saying, "I wouldn't be surprised if Jack didn't find himself that horse of yours and start leading the charge in a big white hat." ("The Long Con")
Behind the scenes
A three-and-a-half-year-old filly named "Flying W Farms Princess Black Pearl" played the role of the horse. The horse was a Georgian Grande, a crossbreed of a Friesian and an American Saddlebred. According to horse trainer Wendy Gooding, a copious amount of RIT dye was applied to the horse, presumably to enhance its black sheen. (Lost: The Complete Second Season (DVD))
When Kate approaches the horse, we see a full-length shot of it. To the right of the picture, the camera captures the horse trainer's hand.
- For fan theories about these unanswered questions, see: Black horse/Theories
- What was the nature of the horse on the island?