I saw a post by Hoplite on the FB about their new K9 armor series they just released. The picture they included with the post showed an armored plate with several bullet strikes and on the back was BFD measurements, see below picture. 38mm seemed high for a canine and this led me to see if there was an actual standard for BFD on canines and my searching was unsuccessful. I was hoping someone here had a better concept of dog internal organ survivability and could relate that to a BFD for comparison.
I did find a paper published in 2012 that discusses another researcher that examined canine mortality compared to impact energy so there is a starting point: https://www.nap edu/read/13390/chapter/10#192
Their info page: https://www.hoplitearmor com/products/k9-armor