This is truly retarded and an exploit that needs fixing. If you spend 15 minutes on an Atrox Provider with your whip for it to turn into a pup, why the hell would you waste the decay of your whip?
If you can tame a big Atrox then that is what it should be. If they are only meant to be pups then limit it to Atrox young.
I feel like MA should compensate us for lost whip decay because every single one of us went to tame a big ass Atrox hoping for a big pet but we all got pups. The Caly Dev team had better fix this. I will be submitting a support case for deceptive activities.