This girl did a few videos talking about sex with dogs. Her video clips and pics are under the name of Whitney Wisconsin. She's legal age so you can just download them on normal internet.
Her first one I think was '10 reasons to have sex with dogs', then she did another one called '10 more reasons to have sex with dogs', and later on she made a clip talking about different breeds of dogs and which ones are best.
I think you are right though there needs to be a clip that explains the dogs knot better with some good examples so girls can see.
Also maybe some better videos about different breeds of dog and which ones are best, there alot of different dog breeds. Whitneys video was good but theres alot more dog breeds than that, maybe girls can have a vote list for the dog breeds they do it with alot.
There are other clips too of her doing 3somes and doing things in public places, and also there was a video where she shows her sex toy collection and says which ones she likes best and everything.