Tigger the tabby is really taking advantage of his nine lives.

The Long Island family that planned to put their elderly cat down before their nanny ran away with him last month was granted permanent custody of the pet Wednesday — and now say they have no plans to kill the kitty.

“We have no plans for euthanization at this time,” Julie Berman told The Post. “As long as he isn’t suffering we’ll continue to work on a treatment plan for him.”

The Berman family’s longtime nanny, Rebecca Katz, absconded with Tigger, 15, in early July after they told her they planned to put him down due to his failing health.

Nassau County Court Judge Rhonda Fischer was set to look at the animal’s medical records to determine who would get to keep the cat Wednesday — but police made a surprise visit to Katz’s Oceanside home Monday with an unrelated warrant for her husband, and used the opportunity to take the cat and hand it back to the Bermans.

Fischer said there was now no need to look at Tigger’s medical records, determining that the cat “is safe” and should stay with the Bermans — while petit larceny charges against Katz would likely be dropped.

Later, Berman said she took the pet, who may have leukemia, to a vet Tuesday — and that he will “continue to get the medical attention and proper treatment he needs to address his ongoing health issues.”

Katz said she believes the family genuinely has had a change of heart about Tigger.

“This cat is going to be unharmed and I’m very happy,” Katz said. “That is all I wanted throughout this whole time. It’s OK that he is not in my custody.”