Hello, there! Thank you for the question!
I do know that Marcus purchased the little animals at the Early Learning Centre to be mascots for each band member, and they’ve said that some randomly disappear and reappear while they’re on tour. I have searched and searched for the original source of my knowledge regarding this topic and I cannot locate it, but here’s an indirect source in a concert review.
In the meantime, you can watch this YouTube video from the boys’ gig at The Warfield on October 20, 2010 in which they discuss their anatomically incorrect toy farm animals and their main—cough, cough, ahem—“charity work.”
I hope that helps, and feel free to message me any time!