That all depends on what the family says and the laws on the number of dogs you can have.
If your boxers have puppies and you keep and raise them, you may have chaos in your house. You need to make sure to train all of the dogs properly with consistency.
Depending with the arrangement of your house and your boxer mate, you may need a bigger apartment if you want to keep the puppies.
If you have puppies, you and your boxer mate may need a bigger apartment or maisonette depending with your budget.
If you have 2 boxers and 2 Bengals, they can both mate as long as you have one male boxer, and one female boxer, and one female Bengal and one male Bengal, that are not related to one another. You can keep their puppies and kittens and raise them yourself, however it is a lot of work to take care of puppies and kittens. There are also many puppies and kittens looking for homes so its not really a good idea to breed your pets.
Because the puppies get cold.
To keep them fresh and not make them mould green ?
As applying to 'boxers' as canines, this is often a function of inbreeding, and considered an indesirable trait to consciously select against. The habits of the owner may exacerbate this considerably, if they are anxious by nature.
This is certainly possible, as long as both dogs have brindle parentage somewhere in there ancestry. For example, if one of the parents was brindle, or maybe even one of the grandparents, they could have brindle puppies. This is because darker colours are more dominant and so are likely to recur again in later generations. For this reason, it is very possible that two fawn Boxers could have a few brindle puppies in the litter. Of course, for a bigger chance of having brindle puppies - use a brindle parent.
If the puppies are with the mother then you should keep them with her until 8 weeks of age. The mother will instinctively wean the puppies on her own, but you may need to help her by removing her from the puppies. The puppies can technically be taken away after 6 weeks, but the longer the puppies are with the mother the better because they will learn from their mother.
to keep fit
most common is 8 or 9. the limit of puppies is 7-12. :D
around 8 weeks