Ashton Kutcher says his daughter Wyatt knows 3 languages while his son Dimitri 'sounds like a pterodactyl'

Ashton Kutcher is learning the difference between raising a girl and raising a boy. The 39-year-old actor welcomed son Dimitri with wife, Mila Kunis, back in November 2016, and it's certainly not the same experience as life with their daughter, Wyatt.

WATCH: EXCLUSIVE: Mila Kunis Says She and Ashton Kutcher Are 'Good' With 2 Kids, Describes Their 'Crazy' Home Life

"I invented another human, I just keep inventing them. That's the second one. That's my second invention. It's amazing, it's so cool," Kutcher gushed to Jimmy Fallon on The Tonight Show on Wednesday. "He's 6 months now so I've had him for a little bit, I haven't thrown him out yet."

Having one of each has shown Kutcher just how different each sex can be.

See photos of Ashton Kutcher and Mila Kunis together:

"It's weird because girls advance apparently faster than boys," he explained. "I didn't know this, but on research, like early childhood advancement. My daughter is like two and a half, she speaks three languages, she's got like Russian and Spanish and English. She actually understands and speaks them."

But the same cannot be said for Dimitri.

"The boy is just like a 'thuck.' Just a chunky, like, 'BAAHHH,'" he said, jokingly imitating his son's cry. "He sounds like a pterodactyl, and he's not coming around."

Apparently the little boy has learned to say "mama," but Kutcher can't get a "dada" out of him.

"Wyatt, I had her 'papa' at four months," he recalled. "She was like, 'Papa, papa' and I was like, 'Aw.' The boy is like, 'BAHHHHH.'"

WATCH: Ashton Kutcher Says Wife Mila Kunis Is Basically an Oracle: 'She's Always Right'

As for more babies, Kunis told ET back in March that's she's all set with two for the time being.

"We're good on two right now," Kunis told ET's Kevin Frazier. "We're solid. It's perfect, it's like, great, you know? I have two really healthy, really wonderful kids. Why test my luck?"

For more from the couple, watch the clip below!