Just did a bit of reading, and it looks like there's a glitch that won't let you take on another animal if a dog follower dies (or something similar). Has that happened to you recently?
Never took a stray dog in. Mhm any way to check this via console?
Last edited by Bouregard; 2012-08-05 at 10:21 AM.
Two rules get you through life:
1. If it's stuck and it's not supposed to be, WD-40 it.
2. If it's not stuck and it's supposed to be, duct tape it