Can you believe the adorable junior Irwin member has entered his teens?!
Thatโs right our favourite little Aussie ripper, Bob Irwin is celebrating his 13th birthday.
Robert Clarence Irwin was born on December 1, 2003.
Terri helped kick off her newly-minted teenage sonโs big day by taking him to the big smoke in Sydney to chat to 2DayFMโs Rove and Sam, and he even got a delicious dog-shaped birthday cake.
Sister Bindi shared a sweet flashback of her younger brother, penning this poignant message: โHappy Birthday to this amazing human being, my brother! Today you turn 13 and I am so proud of you. I still canโt believe that today youโre a teenager. Since the first day I met you, when you were born, I knew you were destined for great things. You inspire me every day. I love you.โ
Meanwhile, his second home Australia Zoo gave the man of the hour his very own dinosaur.
โWoah! Our amazing artist Cameron made this #Pterosaur for Robertโs 13th bโday today! Check it out in the Wetlands,โ the zoo tweeted.
Terri, who lost her husband Steve Irwin in tragic and unexpected circumstances back in 2006, noted how much Bob is like his prolific father.
โItโs amazing because heโs so much like his dad,โ she said.
โRobertโs into photography and wildlife and getting into the ocean. All the things that Steve loves. So itโs very beautiful watching Robert grow up.โ
To mark Bob Irwinโs exciting milestone we look back his 13 sweetest moments!

The youngest of Irwin clan, Bob, has just hit an exciting milestoneโฆ Turning 13!

Mum Terri helped kick off her newly-minted teenage sonโs big day by taking him to the big smoke in Sydney to chat to 2DayFMโs Rove and Sam, and he even got a delicious dog-shaped birthday cake.

The sweet tyke is Steve and Terriโs youngest, who they welcomed in 2003.

Little Bob only got three years with his dad, before the Croc Hunterโs untimely passing in 2006.

Despite the heart-wrenching tragedy, the Irwins stuck together and are one of Australiaโs most beloved families.

Big sister Bindi adores her little brother.

The dancing queen shared a darling dedication to the teenager.
Bob Irwin turns 13!

โHappy Birthday to this amazing human being, my brother! Today you turn 13 and I am so proud of you. I still canโt believe that today youโre a teenager. Since the first day I met you, when you were born, I knew you were destined for great things. You inspire me every day. I love you.โ

Every year, the Irwins celebrate their birthday at Australia Zoo.

The sweet trio in 2008.

โItโs amazing because heโs so much like his dad. Robertโs into photography and wildlife and getting into the ocean. All the things that Steve loves. So itโs very beautiful watching Robert grow up,โ Terri mused of her son.

Only Bob Irwin can rock a bowl cutโฆ the secret? Make sure you have a snake!

The family have expanded, welcoming Bindiโs boyfriend Chandler Powell, who Bob looks up to like a big brother!