Pregnant dogs develop bigger stomachs.
If its mating companion was a chihuahua then probably yes. However i have heard of rather small dogs mate with dogs much bigger than it.
Urine plays NO part in dog mating.
If your dog and cat are mating then there is something wrong there. And yeah they can cause my two dogs had once. So i guess its the same for cats too.
Dogs only mate when in heat and when they are finished bleeding so your dog was ready
Yes, if they are small dogs they can get injured by them, but if they are bigger they might have a bite around their feet.
They will need mating, when the female dog is pregnant(which might need to be 2-5yrs) you'll would have to wait till around 60 days.
Maybe 24 hours.
Because when a dog mates with another they become bonded and love each other, therefore make better puppies the next time around.
because the big dog has a bigger mouth and the smaller dog has a smaller mouth.
Dogs always get stuck together after mating never pull them apart it can tear the female up
In general most dogs are bigger than most cats. But there are miniature dog breeds that are smaller than cats!
You cannot make your dog's teeth bigger. That is a hereditary trait that it is born with.