What are the differences between human and dog reproductive system?

They have the same private parts like for males and females but, when it comes to females, dogs have more breasts than human females because when female dogs give birth, they give birth to more than just 2 puppies.

because place and season/time are important factors of their growth

"alfred wegener" the origin of continents and oceans’, which outlined his theory of continental drift. wegener’s theory of continental drift was met with scepticism by many scientists.