Ashton Kutcher's full-time job has become making sure his daughter Wyatt doesn't "kill herself".

The 38-year-old actor is father to 17-month-old Wyatt with wife Mila Kunis. Being a parent has priority over from Ashton's acting work, as he spends much of his time with his little girl, trying to stop her from hurting herself.

"She's actually crossed that threshold," he said during an appearance on The Ellen DeGeneres Show on Wednesday (02Mar16). "That first year, you spend just trying to keep them alive. And then after that, you actually hit a point where your job is to keep them from killing themselves," laughed Ashton.

"She tries to kill herself on a regular basis. Like, she doesn't realise that's a cliff and that could be dangerous. She'll just jump off the thing. She don't know yet. You'd think that they would come with instincts around fire and large falls, and they don't", the Jobs actor explained.

Ashton and Mila have also been using their skills as entertainers to keep their daughter amused. Among Wyatt's favourite songs are The Wheels On The Bus and Watch Me (Whip/Nae Nae).

"She loves dancing. She's down with dancing. I mean, if I sing The Wheels on the Bus Go Round and Round, she loses it," he said. "That's her thing. She just loves it when the wheels go round. We go to the playground and she gets on the little steering wheel on the playground thing, and the wheels go round. She gets excited," he laughed.

"She likes to Whip and Nae Nae, too. I think she thinks she's doing it, because it's whippin' and whippin' and nae-nae-ing. Mama taught her that."

Ashton and Mila, who first met when starring together in That 70s Show, tied the knot last July (15). The pair did their utmost to keep their nuptials a secret as they were worried about helicopters swarming overhead and ruining the atmosphere of their big day.

"It's a legitimate concern," he said. "I was, like, posting things on social media that were in different locations to avoid that, because we didn't want to be screaming our vows at each other and be like, 'Forever! Did you say never?' We didn't want to do that thing, so we went really under the radar with it."