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depends on how big the air holes are
Weird question, Well they mate with each other but I'm not telling you that they mate with the same sex! You need both male and female to mate and they form a puppy, the puppy grows up and repeats the cycle.
There is no way for a Bengal cat and a Boxer dog to mate. They are different species and can't mate with each other.
You can encourage two dogs to mate by keeping them in close proximity to each other. It would also help if they were both in heat.
they can mate with each other but the children might be deformed depending on the dog and whom, the father mother was. If a father's children even though not from the same mother breed the pups could have birth defects. Same with the mother's pups breeding
by getting on the other dog
This is a disturbing question, but I believe for your dog to be happily introduced to breeding, find a compatible partner of the opposite sex. Let the dogs sniff around each other for a while, if they don't snarl or bark at each other, then leave 'em be and see what happens.
like every other dog mates
The same as any other dog breed.
The same as any other dog breed.
yes a big dog and a small dog can get along, at first they might be scared of each other or not used to another dog around, but eventually they will get used to another and get along just fine. It helps when you get both the small dog and big dog when there are little puppies so they will grow up with each other kind of as the same size but one will just keep growing, but the smaller dog will already know hat dog and trust him/her. But you can get them when they are both adults too, they just might not adjust as fast.
Any dog can mate with another breed of dog.