An animal feeder(1) comprising a hopper (2) for storing feed and a trough (3) from which an animal can feed disposed beneath the hopper (2) and communicable with the hopper (2) to receive feed from the hopper (2), and a barrier (44) at the trough (3) through which an animal can feed from the trough (3), the trough (3) having a pressure contact sensitive failsafe mechanism (43) movable between a closed position in which the barrier (44) is held in place and a release position in which the barrier (44) is open to ensure that the animal feeder (1) does not present a safety hazard to an animal so that the feeder (1) of the invention can be safely left in-situ to feed an animal for prolonged unsupervised periods. <;Figure 1>;