A thug who attacked his sister in front of her children and threatened to stab the family dogs shouted "thank you a***hole" at a judge after he was jailed for the horror incident.
Thomas Thornton, 35, is a career criminal who committed his first robbery aged just 11, Manchester Crown Court was told.
The brute's shocking criminal record includes 142 offences dating back to 1997, Manchester Evening News reports.
Between 2013-19, he kept himself out of trouble, but he is back to his old ways and appeared in court on Wednesday to be sentenced for robbery, two counts of fraud and affray.
The offences related to two separate incidents in January and March last year, the court heard.
Prosecutor Claire Brocklebank said in the first incident Thornton robbed a Mercedes from a woman who had been visiting a doctor's surgery.
It was dark and raining at the time and Thornton, of no fixed abode, grabbed her hand as the victim used her keys to unlock the vehicle, the court heard.
There was a struggle during which the victim punched Thornton in a bid to fight him off.
But he managed to secure the keys and drive away with the car worth £13,000 plus valuables including the victim's purse, jacket, sunglasses and personal items worth a further £2,000.
Thornton then used contactless bank cards to spend £29 and £27 in two separate newsagents, the court heard.
He was tracked down when the victim obtained CCTV images from the shops herself and shared them on Facebook.
The second incident related to a horrendous attack on Thornton's sister in front of her three young children.
Thornton had drunk the majority of a bottle of vodka and an argument ensued when he tried to get his sister to join him, the court heard.
"The defendant picked up the glass and threw it at [the victim] calling her a b****," said Miss Brocklebank.
"She told him to leave.
"He wouldn't and was being abusive to her and abusive to her children."
The court heard that when the victim's youngest child told Thornton to leave their mother alone, he replied: "What are you going to do you little b*****d?"
When the victim told her children to ring the police, Thornton called her 'a grass' and and ran upstairs after her with his 'fists clenched', the court heard.
During the sickening attack that followed, Thornton pulled his sister's hair, headbutted her and bit her, the court heard.
He dragged her by the hair and kicked and punched her to the face and body, the court was told.
While the eldest child dialled 999 and described the attack to a call handler, Thornton said: "You think you're f***ing clever phoning the police, you're a grass, watch what I do to your dogs, I'm going to stab them and pin them to the fence."
Thornton left the house before police arrived.
The court heard his sister was left with five broken ribs and bruising.
Amanda Johnson, defending, said Thornton has since apologised and reconciled the relationship with his sister.
"His sister has clearly forgiven him," she told the court.
"And wishes to be in contact with him again, that's because he's apologised to her.
"He wants to be in contact with her from prison, he is concerned about her and is sorry for what he did."
Recorder David O'Mahony described the attack as 'serious sustained violence' and sentenced Thornton to one year and nine months in prison.
He must also serve three years and nine months for the robbery and fraud offences consecutively, meaning he faces five-and-a-half years in jail in total.
Thornton was furious at the sentence, describing it as a "f***ing p***take" and added "thank you a***hole" as he was led down to the cells.
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