Timothy (Phleum pratense), or Herd's Grass is commonly grown for cattle feed and, in particular, as hay for horses. It is relatively high in fibre, especially when cut late. It is considered part of the standard mix for grass hay and provides quality nutrition for horses. Timothy Hay is a staple food for domestic pet rabbits, guinea pigs,chinchillas, and degus, often making up the bulk of their diet. The flower is broad, with densely packed spikelets.