Hay Bale

Hay bales are decorative blocks that can also be used to feed horses. They are able to be placed sideways, similar to the way that wood and pillar quartz blocks are placed.

Horses
Starting in update 1.6.1 (The Horse Update) hay bales can be used to give 10 hearts and will speed growth by 3 minutes when fed to horses.

Crafting
Note that hay bales cannot be crafted back into wheat, making them more of decorative or functional (horse food) blocks as opposed to storage blocks such as diamond/iron/gold blocks. This makes hay blocks similar to block of quartz, nether brick blocks, and stone bricks.

Trivia

 * Hay blocks burn just as long as coal blocks.
 * Hay blocks are the first craftable blocks that can be used to feed a Mob other than The Player.

Gallery
Strohballen Balle de foin 干草の俵 Strobaal Snop siana Сноп сена 干草块