HI,
I have a Border Collie, female ,Named Chewy.......and I am starting her in agility......shes been at it for atleast half a year.i havent taken her to any classes yet....DO you have any pictures of your BC mix??3 months is young and 15 pounds isnt much but im sure that he is about 4 months and weighs a lil bit more by now......because he is still growing and his bones are fragil i wuold think that just a small agility course would be ok....make sure that the jumps are very small! because its easy for them to get hurt on here!! If you would like info on Agility and like sum pictures of agilty e-mail me!!I would love to help agility is lots of fun but lots of work!!Good Luck!!

Kay


Fcr