Ended up playing this myself with two browsers. Incredibly polished, stable and from the limited playthrough seems bug free.
I love abducting the animals and their cute animations.
However, I don't think I really understood the gameplay. I just went around and abducted the animals and won, no problems. I noticed player one could tranquilize and stuff and they other player could transform into different animals. But that all seemed unecassary. As far as I could tell, there isn't much gameplay. But I suppose that is because its multiplayer and adversarial and just playing by myslef I don't get the adversary.
But you have an incredible foundation to add plenty of gameplay. Marked this as 5 stars for 'post-production' potential.
Great job.