Question

What is the difference between a breed and a species? Give an example for each category.

Answer 1

Criteria	Breed	Species
Definition	Breed is a group of animals of the same species which are similar in shape, size, appearance and are related by descent.	Species are the group of reproductively isolated individuals that can breed among themselves to produce fertile offspring.
Reproductive isolation	Members of two different breeds of the same species are not reproductively isolated and can mate amongst themselves to produce fertile offspring.	Members belonging to two different species are reproductively isolated from each other.
Examples	Red sindhi, Gir and Sahiwal are different breeds of cows.	Cows and sheep are two different species of animals.