It depends on what proportions you're talking about. If you're talking male Great Dane and female Chihuahua then definitely not, as the female is simply too small to be mounted by the male. Artificial insemination is always an option, and required for survival of certain breeds similar to and including the French Bulldog. Technically speaking, any two breeds of dog can mate, even if it requires help from humans.
male and female what?
You make more dogs that probably won't find a forever home. Plus I think depending on the size difference your female could die from it.
No, a Syrian Hamster needs a male to become pregnant.
a male and a female "DO IT"
a female peacock gets pregnant by the tears of male peacock
No, there has to be a male so the female can get pregnant.
Yes. A female hamster cannot become pregnant unless it mates with a male hamster.
No, it is either a female if it is pregnant or an over fed male ! Just a fun fact, male seahorses get pregnant, but that is about the only animale where the male does.
Well, the male doesn't really do anything. The male just protects the female. It depends how close the male and female is.
Yes!
male and female get together
If it is male then it cannot be pregnant.