The average weight of a goat varies depending on breed, sex and age. Goat breeds developed for dairy production are generally smaller than goats bred for meat production. There are also several breeds of miniature goats.
Small-breed and miniature-breed goats, such as the Nigerian dwarf, can weigh as little as 2 pounds at birth and reach approximately 75 pounds when full grown. Dairy breeds are generally medium-sized, with adult female Alpines reaching about 140 to 150 pounds and males 170 to 190 pounds. Among the largest of goats bred for meat production are Boer goats. A fully mature Boer male goat can tip the scales at over 300 pounds.