Hi Dr. Peter,
1-yes he is hacking a little. I did do a finger sweep to see if there was something obviously stuck up high and he did throw up yesterday one time. He slept ok in the night but today is still occasionally hacking
2- yes the hike yesterday is in an off leash area with lots of dogs
3- he is a poodle mix weighs about 11 pounds
I suppose - I was expecting he would feel better after getting it up - it looked like his kibble plus some dried leaves from the hike but he has continued with hacking but not forceful...