The day before the Safe Haven actor was seen pushing their son in a stroller and walking their dog in Brentwood, Calif.
In October Duhamel told E! News about being on diaper duty.
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“Timing when he’s done actually pooping. I’ll be in the middle of changing the diaper and he’ll literally spray me. It’s figuring out when he’s actually done, when we can go in for the diaper change. You never know. It’s a crap shoot, no pun intended.”