Two men convicted of demanding $3000 for the return of a dognapped chihuahua called Harvey — one of whom is the partner of notorious dine-and-dasher Lois Loder — have both been jailed for more than a year.

Chiminh Phun, 42, and Robert Narrier, 39, were the would-be masterminds behind a hare-brained plot to put a price on the head of the dog, who was stolen along with a car and phone from a house in Mount Lawley in January 2017.

When owner Hamilton Gervaise discovered his beloved pet missing, he desperately sent a message to the stolen phone begging for the dog’s safe return.

“How much are we talking about? I want 3,000 Gee. Take it all leave it,” came first reply.

Camera Icon Harvey the Chihuahua was held to ransom. Credit: Supplied

“Give us what we agree on as our reward. Your mutt angry. Don’t forget I got your address. Bring the cash but no authorities,” were the messages that followed.

But authorities were involved, after the police were contacted, and they set up a “sting” to catch the culprits.

When arrangements to swap the money for the dog were finalised — following a “proof of life” photo being sent — it was Phun who came to make the switch.

“Just give me whatever you’ve got, I can get you the dog, I can get you the dog,” he said. What Phun did get was arrested.

After being refused bail, WA’s District Court was told messages were sent to friends saying: “Please return the dog, drop it off at the nearest police station.”

The court heard it was eventually Loder who dropped off the dog, at a local vet.

“The dog was of significant emotional value to (Mr Gervaise) and his wife,” Judge Laurie Levy said.

“Both of you demanded the sum of $3000 be paid by Mr Gervaise with the threat that if he failed to do so, he would not get his dog back.

“There is compelling evidence, therefore, that you were likely the driving force and calling the shots in the plan Mr Narrier. I note that it was Mr Phun who was sent in to collect the money whilst you waited nearby.”

Narrier was jailed for 15 months. Phun was jailed for 13 months. Loder is currently serving a two year sentence for her string of fraud and theft charges.