woof-the-woof-woof: ultrafacts:Research by Ragen McGowan & others at (University of Agricultural Sciences, Sweden) investigates whether dogs enjoy the experience of solving a problem in order to obtain a reward, or if it is just the reward itself
tags: Ipkiz,
from: https://ipkizino23.tumblr.com/post/122618072395
more here tumblr.freepornpreview.net/ipkizino23