Ballistic gel is meant to give us a baseline for penetration and projectile effectiveness. It's not easily transferable to live animals.
I have seen some creative test trying to approximate projectile effectiveness on different species.
Some have added hair and skin, some have added feathers and even molded bones into the gel.
It makes for interesting videos and a lot of supposition on the viewers part as well and the presenters part.
Overall your customer base will likely be educated and experienced shooters\hunters and will make their own conclusions based on personal experience.
That being said, by all means, make some good videos, we all enjoy them.
Best of luck.
Doc