The only thing you can really do is rest it. Just do what ever you can to not use the muscle very much. It normally takes about 2-4 weeks for a pulled muscle to heal. I haven't heard to many cases of a pulled muscle in the abdomen. So you might want to see a doctor and make sure its not a hernia.
Yes, wait for it to heal.
How to know if you pulled a muscle or got injured
Get him to the vet, he may have done more damage than simply pulled a muscle. However, if it's just a pulled muscle, you will have to crate him for a little while to allow him to heal. Talk to your vet to see what he/she recommends and to get some pain-killer for the dog too.
The diaphragm is the muscle separating the abdomen from the chest
A pulled groin muscle can take anywhere from a few days to several weeks to heal, depending on the severity of the injury. It is important to rest, ice the area, and avoid activities that worsen the pain to promote healing. Physical therapy may also be beneficial in the recovery process.
The simplest answer is you don't. Most instructors will not allow you to train when you are injured. It will only aggravate the injury and make it take longer to heal.
the diaphragm is the muscle separating the chest and the abdomen
Muscle spasms occur when a muscle is torn or overstretched. It starts with a muscle strain, known as a pulled muscle. The strains usually heal with time but if the pain is unbearable, patients may need to take pain medication along with applying ice or heat to relieve the pain.
The medical term for a pulled muscle is a "muscle strain." This injury occurs when muscle fibers are overstretched or torn, often due to excessive force or overuse. Symptoms typically include pain, swelling, and limited range of motion in the affected area. Severity can vary from mild strains, which may heal quickly, to severe strains that require more extensive treatment.
Abdomen.
When a muscle is pushed to far with exertion, small tears can occur in the muscle tissue. The pain associated with this damage when the muscle is used is called a pulled muscle.
when i did it took about 7-10 days then i was okay. except mine was very minor and if yours is bad then it could take longer. put ice on it and lay off whatever you think caused it. i hurt mine doing gymnastics. good luck and i hope i helped.