I constantly have pets taken from the pound for sale. They are a flat rate of $1000 and located in my 'wastelands' tab. I may also be open to trades of stone, wood or blue prints. Some will have no red stats, some will be full of red stats. 

Some pets have been trained to or above level 10. If they have no red stats, I will be asking more than $1000. But feel free to make me a reasonable offer :)  

I currently have one level 10 GRYPHON with wild pedigree and no red stats for sale. Also, a level 14 PUMA with 6 green stats and GP1.