Its impossible. All of your dogs are puppies anyway so it doesn't matter how many trainer points you get. >.<
They're designed to stay as puppies forever, not unless you find a cheat code to make them age.
Sorry. There is no possible way you can breed puppies. People just make up lies. I wish I could and I cant. Two puppies cant have a puppy.
No, you can't make your own breed. They have a ton of different breeds in stock for you. You can unlock new breeds by having a lot of trainer points. But there is a weimeraner breed you have to use the jack Russel to find a really rare hankerchief only the jack Russel can find it though
you feed your dog to a yeti and you get 1,000,000,000 trainer points and all the items ( make sure you have another dog! )
You can if you have an action replay. If you don't you have two choices. The first one is that you go out and buy one. The second one is that you play every day to see how the puppy is doing because I've never bred my puppies so I have no idea what to do but this is what to do if you don't know if they can.
alot of practice
Yes, you can if you have auction replay.
Use the Colonel Bogey Record.
No, Male Dogs Can't Make Puppies, It's physically Impossible. Only Females Can Make Puppies.
the same way a dog would make puppies (mating)
No, it's impossible. The Nintendo Team made the Nintendog to stay a puppy, and never grow up. But with the little dogs, you can pretend it gets into an adult. But for real, no, It will always stay a puppy. The truth about nintendogs is that when you first buy your puppy, it is smaller than your other dogs because you read in the manual that they are puppies. 'your other dogs that you had for a longer time seem older than the more newer puppies that you buy. So, when you buy a new puppy, it is smaller than your other dogs while the other ones in your house are just a little tiny bit bigger than the new puppy. Also a way to make a nintendog grow older is to buy an action replay. But you can't actually make your dog older but you can make it bigger, or if you want, smaller.
I don't think there is a code but I know how to get lots of trainer points! : Plug in your ds to its charger then put your brush on your dog (make sure it's on its belly and make sure that it is the right brush or else it won't work) and leave it on all night long and in the morning you will have more trainer points!