The Earth currently has about 19.6 billion chickens, 1.4 billion cattle, and 980 million pigs being raised as livestock. Feb 5, 2015

Types of Farm Animals (i) Avian Species. This group belongs to all domesticated birds such as domestic fowl, ducks, turkeys, geese, guinea fowl, swarms, pigeons, pheasants, canaries and ostriches. … (ii) Mammalian Species. … (iii) Aquatic Species. … A.