>Firstly, are you qualified to know if your dog was not in "some" degree of respiratory distress?

I had a little red dog when I was a kid. A mutt,a little larger than a pug, with short legs.

She would run alongside me while I rode my bike, say at 15km/h.

One time she ran till she collapsed. I felt really bad for not noticing that she was running too hard.

She had so much heart I think she would have run herself nearly to death if I let her.

After that I never rode fast when she was with me.