Taking to her Instagram Stories, the former MAFS bride shared a clip of Johnny sitting with the pooch.
"Welcome to our family ENZO. Officially. The. BEST. Day. Ever," she captioned the video.
"@johnnybalbuziente I love you... so, so much."
Johnny shared his own heartfelt post in honour of Kerry's special day, along with several photos taken throughout their relationship.
"Okay, this is no small talk. Today marks my leading lady’s BIRTHDAY!" he exclaimed.
"A lot of people fell in love with this amazing human on TV, but I can assure you, on so many levels, that they have only seen a snippet of how truly special this person is. She has brought so much light and laughter into my life. I am so proud to stand by this inspirational woman. Hand in hand. Back to back.
"@kerryknighttt - thank you for the joy and warmth you bring. 😘HAPPY BIRTHDAY KEGZ!"
At the end of June, Kerry and Johnny took the big step of moving in together in Brisbane and have settled in nicely.
"Thanks for decorating our little townhouse in ‘terracotta tones’ (pink) with a ‘Hamptons feel’ (looks like a beach house 😂) to make it feel like home for me," Kerry shared on Instagram at the beginning of July.
"At least we can both agree on having a designated beer shelf in the fridge, right?! 😂
"Thank you, you’re a good man @johnnybalbuziente x."