Husband Wants To Announce With Animals

Alright so my husband apparently has a dream pregnancy announcement that he's had since about a year ago and he says he gets more excited about it with each new animal. He wants to line my animals up in the order in which we got them and then have me on the end with a question mark on my belly and an ultrasound photo underneath the question mark. I added that we should put, "What will it be, a baby or a (insert whatever baby looks like in the ultrasound photo like a peanut or dinosaur)? Introducing are new best friend without the fur! Please welcome baby Lancaster! Coming November/December 2018!". We havent had our ultrasound yet, it's tomorrow but, I was wondering the logistics of it. How are we going to line a guinea pig, a female dog, a male dog and a cat all up perfectly? I just dont see how we can do it but, I really want to do this for my husband because it has been the first thing that he has really been excited about! I think if I do this he'll be excited about other things too! How would you do this? They're all very high energy animals.