Robert Irwin celebrated his 16th birthday on Sunday at the Australia Zoo.
The conservationist and son of the late Crocodile Hunter, Steve Irwin, shared a video thanking his friends, family and supporters for sending their well-wishes on his special day.
(MORE: Bindi Irwin's brother Robert will walk her down the aisle)He also shared a photo showcasing how he spent the day -- feeding crocodiles!
"You know itās going to be a great birthday when it starts by feeding a croc!" he captioned his post. "Thank you to everyone who came out to @australiazoo today.. it meant the world to celebrate with you all!"
Robert's mother, Terri Irwin, posted a loving message for her son on Twitter, featuring a photo of her late husband with Robert.
"Happy 16th birthday, @RobertIrwin. Your dad would be so proud of you," she wrote. "He has loved you since the moment you were born."
Happy 16th birthday, @RobertIrwin. Your dad would be so proud of you. He has loved you since the moment you were born. pic.twitter.com/FhwnQRJtA7
— Terri Irwin (@TerriIrwin) November 30, 2019
She also posted a collection of photos of Robert with his animal friend, Jenny the snake, to mark the occasion.
Growing up @AustraliaZoo means always having special friends. Jenny has been @RobertIrwinās pal for 16 yrs tomorrow. Happy almost birthday! pic.twitter.com/I40HgpNa8I
— Terri Irwin (@TerriIrwin) November 30, 2019
Robert's sister, Bindi, shared what she feels is "one of the sweetest photos ever taken."
"My whole world," she captioned a photo of her mother with Robert. "Itās incredible that Robert is sixteen now, time sure does fly. Also, Mum is the most beautiful woman in the world."
(MORE: Steve Irwin's daughter, Bindi, is engaged! See her gorgeous vintage-inspired, lab-grown ring)
The bride-to-be also shared a throwback of Robert in an adorable costume. "Robert, one of the best parts of my life is getting to be your sister," she wrote. "Thank you for being such a wonderful light in my life."
"Youāre amazing and I love you!" she added.
