18 weeks is not to young to sleep in bed, i do think that it does help to have them in a protected space. We keep a small pet bed with rolled sides on our bed and Lola sleeps in that all night long placed on our bed on top of the covers between my husband and I a little bit below where our knees are. This way we always know where she is, and i guess we are lucky since she almost never gets out of her bed |