Tiger “brothers” that have been together at a Tacoma, Wash. zoo since they were orphaned as cubs will soon be split up.

The tigers, Berani and Dumai, arrived at the Point Defiance Zoo & Aquarium in 2012. Both were rejected by their mothers, according to the zoo.

"As they've matured into adults, they've continued to spend a lot of time together, but they've also been growing apart -- each tiger needing more alone time," wrote the zoo over Facebook.

The adoptive tiger brothers are two different species: Malayan & Sumatran.

They became affectionately known as the “Tiger Boys” to staff members and visitors. “But they are boys no longer,” wrote the zoo in a release.

Officials with the zoo said it’s time for the two to move on, as tigers are naturally solitary animals and they have both reached sexual maturity.