Lady Gaga's dog walker has left hospital after having part of his lung removed as a result of being shot when the singer’s beloved French bulldogs were stolen.

Ryan Fischer was walking three of the singer's pets near Sunset Boulevard in Hollywood when two men jumped out of a car and tried to steal the animals on February 24.

In the ensuing struggle Fischer was shot once and two of the dogs were taken. They were later returned unharmed after Gaga offered a  $500,000 dollar (€425,000) reward.

Taking to social media, Fischer has shared an update about his recovery and revealed he has left hospital after undergoing surgery on a collapsed lung.

He said he felt he was recovering quickly from the gunshot wound and hoped "life would be back to normal soon enough". 

He wrote on Instagram: "It became quite clear that my lung was not healing, and the bullet wound had scarred my tissue like a burn.

"It could take months, if ever, for the hole to seal. Lunches of grilled cheese and tomato soup and art walks blurred into one until the day came to remove portions of my lung."

Fischer said he has accepted his recovery "had become anything but a straight line".

He added: "Now that I’m finding my way in the outside world where triggers are real and working through trauma is WAY more than dealing with one unfortunate moment in life, I look back at my exit from the hospital and smile that I continue to approach each day the same way."

Earlier this month, Fischer's family thanked the singer for her "non-stop love and concern".