A thief has repeatedly stabbed a puppy in the face with a screwdriver during a vicious home invasion in Sydney's north-west that police believe was linked to a spate of robberies across the area on the same day.

The 11-month-old American Staffordshire terrier, named Juice, has undergone surgery to have one eye removed after he was savagely attacked at a home on Bridgeview Circuit in Bella Vista just after 1.30pm on Sunday.

"It's absolutely sick and wrong," Juice's owner, Todd Robbins, told Nine News.

CCTV footage taken within the home, and supplied to Channel Nine, shows two men walking up casually to the front door of the house, before ransacking the ground floor of the property.