On Wednesday, which also happened to be Duchess Catherine's birthday, Prince William was at an engagement with London's Air Ambulance Charity and opened up about his youngest son's newest habits.

Prince William, Duchess Catherine, Prince George and Princess Charlotte

The London Air Ambulance Charity is celebrating its 30th anniversary

Watch Prince William pilot an air ambulance over London!

Chewing Everything These Days

Prince William was given cards and gifts to give to his wife for her 37th birthday and one of them was a squeezy toy helicopter to which Prince William replied "amazing, that will go down extremely well," and proceeded to joke about how Prince Louis is chewing everything these days, according to Hello.

Duchess Catherine Prince William St. George's Chapel Windsor Eugenie Wedding

A very Happy Birthday to the Duchess of Cambridge!

This is how Kate has celebrated her birthday over the years

With Prince Louis being at the age of eight months, we expect nothing less from the adorable royal baby himself! Happy teething Prince Louis!

The Duke and Duchess of Sussex at South Bondi Beach

The style savvy Duchess of Sussex puts her fashion skills to good use...

Meghan's first Royal patronage visit