Emily, i'm sorry to hear your little guy escaped. I would definitely check dark places where could get into. Start with everything in a 10 radius of the cage. Thats where i've found mine on my two escapes now. They usually try not to go too far, but definitely want to get out of plain sight and hidden. Good luck with finding him. As far as the other animals in the house go .... i would definitely keep an eye on them. They could lead you to him if they spot something out of the ordinary.