Thompy’s home!

The beloved Cocker Spaniel who was swiped from outside a Boerum Hill deli last week was back with his family on Sunday after being stolen and sold on the street like hot watch.

“We had a very satisfying day,” said proud owner Jon Crawford-Phillips, who actually conducted a stakeout in Red Hook as the 12-day search for his best friend approached its dramatic climax.

“It was very therapeutic pulling down all the missing dog posters we had put up.”

The horror began on April 13 when Crawford-Phillips tied Thompy to a hook outside the State Street Gourmet Deli on Third Avenue.

He was inside the store for about 30 seconds, but when he returned, Thompy was gone.

Thompy — short for Thompson — could not have freed himself and run off, Crawford-Phillips said, so someone must have untied the leash.

Concerned neighbors — and we, too — publicized the dog-napping, and word spread quickly about Thompy’s disappearance.

“We got a number of calls about possible Thompy sightings, but they were very vague,” said Crawford-Phillips.

These calls brought both hope and despair to Crawford-Phillips and his wife — especially after rumors swirled that Thompy was the dead dog recovered from the lake at Prospect Park last Thursday morning.

But all speculation ended on Saturday evening when a Red Hook woman said she was sure she saw one of her neighbors walking Thompy.

The funny thing was that this neighbor never had a dog until just a few days earlier, the tipster said.

“[The caller] was confident and the information was specific enough that I was going to get an answer,” Crawford-Phillips said.

But he knew that meant a stake out.

Armed with a cup of coffee and a newspaper, he drove over to the spot where the caller had last seen Thompy at 7 am on Sunday and sat in his car, scanning the street.

“I had seen enough stakeouts from movies to know how it goes,” he said.

But the wait paid off. Three-and-a-half hours later his heart almost leapt out of his chest; there was his beloved pooch padding down the street alongside his new “best friend.”

Crawford-Phillips called 911 — he didn’t want to get the cops involved earlier — for some backup when he approached Thompy’s new charge, who said that he had bought the dog 10 days earlier for $500 days, but couldn’t identify who he had bought it from.

A quick visit to a nearby vet left nothing in doubt: Thompy’s chip identified Crawford-Phillips as the canine’s rightful owner.

Facing the truth, Thompy’s new “owners” had no choice but to bid their farewells to the brown and tan cocker.

“They looked after [Thompy] pretty well,” said Crawford-Phillips, who was ecstatic to have his dog back in his arms again.

The feeling, of course, was mutual.

“You could tell he was pleased to see me,” Crawford-Phillips explained, adding that after a victory lap around their courtyard on State Street and “a jump on the sofa,” Thompy was safe at home with his family as if he had never left.

“It had been 12 days, we were losing hope a bit,” said Crawford-Phillips, adding that he’s never going to leave Thompy alone on the street again.

“[My family and I] are going to be much more vigilant,” he said. “I already thought that we were being safe and careful, but we have to be more aware if there’s a guy out there trying to take dogs.”

Thompy’s story is just one of several pet thefts to take place in the borough in recent weeks.

According to police, a pit bull was stolen right in front of its owner during a walk through Manhattan Beach on April 4. In late March, an Old Mill Basin resident said that someone stole her fluffy white Maltese after it escaped her back yard. The dog-napper threw the small dog in her trunk, the woman told cops.

Thefts like these are not that uncommon, explained the American Kennel Club, which said that the FBI National Crime Information Center listed 200 dogs in their stolen property database in 2009. But the dogs in the database, like Thompy, had “owner applied serial numbers” from microchips or tattoos, explained Kennel Club spokeswoman Lisa Peterson.

Stolen dogs without such identification can’t be added on the list and fall through the cracks.

“There are several motivations why someone may steal a pet,” Peterson explained. “One is to steal it just to resell it within a day or two. Many times when people see dogs sold on the street, it’s an impulse buy, they think they can get the dog cheap.

“Unfortunately, in most cases, its stolen property.”