sheep wiki:
>This article refers to the sheep genus. For the domesticated species which is used for wool and meat production in farming enterprises, see Domestic sheep. For other uses, see Sheep (disambiguation). See text A Sheep is a mammal, one of several woolly ruminant quadrupeds in the genus Ovis. The domestic sheep is thought to be descended from the wild moufflon of south-central and south-west Asia. A male sheep is a ram, a female a ewe, and a young sheep a lamb. Sheep meat is called mutton or simply lamb.
See more at Wikipedia.org...
tree wiki:
>This article is about the biological organisms known as trees. For other meanings of the word see tree (disambiguation). A tree can be defined as a large, perennial, woody plant. Though there is no set definition regarding minimum size, the term generally applies to plants at least 6 m (20 ft) high at maturity and, more importantly, having secondary branches supported on a single main stem or trunk (see shrub for comparison). Compared with most other plant forms, trees are long-lived. A few species of trees grow to 100 m tall, and some can live for several thousand years.
See more at Wikipedia.org...