baby bunnies

Si
So my sister-in-laws dwarf bunny is named Shadow and she was picked up behind the dumpster in a box. We all assumed it was a boy but I found that Snowball, the other bunny was constantly humping in. And today, my sister in law found a new born baby bunny on the floor, we were in shock. 
Funny part, my mom goes. "Wait, so who has the titties!?