Many domestic horses are kept in an environment very different from that of free-living horses, consuming a varied ad libitum forage based diet for up to 18 hours of the day (Harris, 1999). Encouraging foraging behaviour, defined by Goodwin et al. (2002) to include sniffing, manipulating, biting, chewing or ingesting food, is thought to allow domesticated horses to spend more time eating, approaching the time spent on this activity in free-living horses. The diet of the free-living horse includes a selection of grasses and herbs (Putman et al., 1987) whereas most domestic horses are provided with a single forage diet (Goodwin et al., 2002). In a short term trial Goodwin et al. (2002) found that offering more than one source of forage to stabled horses resulted in them spending significantly more time foraging compared to a horse on a single forage diet. This effect was found to continue for longer periods by Thorne et al. (2005), with four forages being identified as maximising foraging time and minimising standing time (Dumbell and Tackley, 2007). Storing and using four forages may however be impractical for the single horse owner. The present study aimed to determine whether providing two forages or one forage as two different stem lengths increased foraging time when compared to a single forage.