So, your male pup squats or simply stands when he pees rather than lifting his leg. While most male dogs tend to lift their leg instinctively, there are some that simply never seem to acquire this seemingly natural action. Bear in mind that in the wild, lifting a leg to pee has a specific purpose to a male dog--it allows him to pee on vertical surfaces to mark his territory with his own unique scent.
If you or a neighbor has a male dog that yours can watch when he pees, it is possible he may simply imitate what he sees in a "monkey see – monkey do" fashion. The good news is that with a little hard work and effort, you can train your dog to lift his leg when he pees. One thing to consider, if you have your pup neutered the instinct to lift his leg when he pees may be diminished.
The reality is that not all male dogs lift their legs to pee, and for most, there's no real need to. But, if you want your pup to learn how to do so, it is a behavior that can be taught with plenty of time and patience. There are only a few ways to train your dog to behave this way, each of which is likely to take a few weeks to accomplish based on your pup's desire to learn and your dedication to training him. The most important thing to remember is that this is going to take some time and you need to be patient.
You can start training your dog to lift his leg to pee at any age, but the earlier you start the less time it is likely to take because you are teaching him what should be an instinctive behavior. No matter which training method you decide to use, you will need a few things:
The rest is up to you; you need plenty of time and patience if you want this training to be successful.