Kourtney Kardashian's Son Mason Disick Cuddles Aunt Kim's Kitten, Mercy (PHOTOS)

The Kardashians have added a couple of new additions to their brood this summer, including Kourtney's daughter, Penelope Scotland Disick, and Kim's Teacup Persian kitten, Mercy.

But of course, fans of reality TV's first family still have a soft spot for 2-year-old Mason Disick, who appears to have a soft spot himself for Kim's kitty .

Kim posted a photo of the toddler cuddling Mercy on Instagram yesterday ... and it's adorable. "He loves her," Kim wrote, sharing the picture of Mason giving the blue-eyed kitten a squeeze.

But although Mason has someone to cuddle with these days, Kim is feeling a bit lonely.

"Can't sleep again tonight!" she tweeted . "Maybe its because my baby @kanyewest isn't here to cuddle *bbm crying face*."

See the precious picture of Mason and Mercy below!