A puppy stolen during a break-in in Melbourne's east nine days ago has mysteriously reappeared in his owner's backyard, police say.

The caramel-coloured toy schnoodle, who was 15 weeks old, was stolen from a house on Upton Road in Windsor on June 4.

Police said Ted's owner, Ally, returned from a shopping trip around 6.15pm on Sunday to find Ted in her backyard.

The dog is worth $2,000.

Stonington Crime Investigation Unit Detective Senior Constable Katie Johnston said "both person and puppy were overjoyed at the reunion".

Last week, Detective Senior Constable Johnson said two laptops and an iPad were also taken in the break-in but that Ted was the priority for police.

"It's cruel. It's definitely someone's family member. It's a pet. It's not an item," she said.

Victoria Police thanked the public for their assistance in the matter.