Black Caviar's half-brother on the mend after brush with death Caviar brother on mend Black Caviar's half-brother, a two-year-old colt known as Jimmy, appears to be on the mend after a brush with death. The colt, owned by BC3 Thoroughbreds, had a reaction to antibiotics and developed the life-threatening hoof disease laminitis. BC3's Simon Marshall said the horse was eating well and appeared much happier.