Anonymous wrote:12-18 months. Mobility without rationality. Either needing to be held or getting into things he shouldn't (china cabinet, cat's water bowl). Cannot be left unattended for one second. Thank God he can't climb out of the playpen yet.
Mine is 11 months and mobility without rationality describes him. He'll grab furniture and SHAKE hard to try to topple it, or topple himself. Will kill himself trying to get beyond baby gates. We already had to lower the crib to the lowest setting since he's very tall.
Needs to be held but when he's being held will grab noses or climb all over you, etc.