Boxer Buddy wrote:
If you want a decent training partner that isn't going to be a pyscho if you don't happen to run every day with them... a boxer is great. My boxer is a stud on trails (10-15 miles) and my PT has a boxer he mountain bikes with. He won't go long on roads (happy with 5-7 milers) because of pace/boredom. Three season dog though. Doesn't handle summer running well.
I've run with 3 Boxers. You're right in that none of them could handle much heat. But in cool or cold weather, they can run very well.
My first Boxer who I trained from a puppy, could run 10 miles with me, then still have the energy to play and sprint after, and never got distracted.
My second, because I didn't train her to run early enough, would get too distracted by other dogs, but I blame myself for the poor training in her case.
My third Boxer, who I have now and rescued (age 5) is becoming a very good runner. It's important to have a good collar that they respect and which keeps them focused.
Boxers are all around incredible dogs. They love running like kids love unlimited candy, Disney and toys. If you take they out for a good run, they feel like they conquered the world, the whole rest of the day.