No, 2 different species cannot produce offspring.
No, a human and dog do not impregnate each other.
1 1/4 to 1 1/2 times more than before pregnancy
Yes, it's possible.
Female dog and a Male dog
Only if the man is receiving sex from a male dog and takes the dog's knot.
No. Human semen can't get animals pregnant.
the male dog acts funny because they know they can not "make anything" with the female dog.
a male and female will have sex
It doesn't matter if the dog is male or female. It is a personal decision but it doesn't really make a difference.
It depends on the individual dog and your personal preference. Always make sure you meet a potential pet first, to make sure it's a good fit. I have had experience with both male and female labs, and they were both wonderful.
Black is the best!
You can't make your dog mate. Your dog chooses who she/he wants to mate with. For example: My aunt tried to get her dog and my dog mate. It didn't work out because the dogs avoided eachother and didn't quite get along. My point is YOU CAN'T "MAKE" YOUR DOG MATE.