Often, a male dog is protective of the pregnant female dog, usually if he is the "mate." Sometimes dogs, mates of the pregnant dog or not, will act aggressivley towards the female dog, also known as the "bitch."
Male dogs do not come into heat. Just the female dogs.
whining at her and all over her
they hump your leg!
Horney.
By mating with a male dog.
Yes.
No
If the female is trying to get pregnant with a male dog then it will go on the males back but if the female dog is going on the males back while pregnant then it may means that they wanted to have another baby.
Like breed her? Female will usually only allow a male on her when she is in heat.
no but its highly likely
Yes. You can get pregnant no matter how old either one is.
If the male has not been neutered and/or the female has not been spayed, then yes. And unneutered dog can get any unspayed female dog pregnant.
Yes. It is just like how after the first sex, a human can get pregnant.
A dog can get pregnant when it is in its 'heat'. A male dog can tell if a female is in season, but this can be any time in the year.
yes, but can obviously not get her pregnant
Three of four minutes