The Zoologists/Lisa struggles to move

Lisa doesn't like this and she tries moving. She drops down a bit but the dog just goes with her. Humping her, each thrust moving her pants bottom down.

Eventually just her ass is showing. The dog shifts and the dick hits the entrance to her ass. Lisa freezes, as another thrust slams into her ass. Then again, this time the tip gets in.

This brings pain to Lisa. Another thrust and more goes in.

"Ahhhh, get it out. Get it out"

Tears are coming down her face as the Dogs dick gets further and further in with each thrust.

Page, sees this but can't do anything as she is trapped below both her sister and the dog.

Lisa collapses, her face goes into Pages chest and the dog humps faster, the tightness drawing him in further.

...

David, feeling guilty comes home to pick up Lisa. Her hears moaning coming from upstairs, there are sobs in between those moans.

He walks upstairs and finds its coming from Pages room.

The sight is something to behold. Page is laying on the flaw, completely naked. Lisa on top of her clothed with her PJ bottoms down her ass, and then Max humping away TBC