Noah's Ark cake

The same cute mom who requested the Cars 2 cake also wanted me to make her son's christening cake that was for the same weekend. She wanted something similar to this cake, and this is what I came up with. She liked the animals and colors, so I stuck with that. I know Noah's ark wasn't a sailboat, but the boat was made of rice krispie treats and I wasn't sure structurally how to make a tower sit on top of it.

Cake was red velvet with vanilla buttercream.