The Vampire Diaries actor announces his recently rescued dog Nietzsche is expecting and due to deliver in the next few days

By Kiran Hefa
Updated October 03, 2013 08:15 PM

The Somerhalder family is getting even bigger!

A little more than a month since The Vampire Diaries’s Ian Somerhalder brought home rescue dog Nietzsche, he took to Instagram on Wednesday to announce that his “new girl” is pregnant and due any day now.

“Preparing for the launch of a whole part of life – being a GRANDFATHER,” he wrote. “I’ve got my hand on a belly with 8 little ones about to explode out into the world.”

It’ll be a busy few days for the star, whose CW series also begins its fifth season on Thursday. But the actor’s staying focused on his responsibilities as a pup parent, praising his furry mom-to-be as a “trooper” and wondering out loud about how these new additions will alter his life.

“2 cats 9 dogs – is that considered a hoarder???” he added.

In addition to Nietzsche, Somerhalder, 34, is an outspoken cat owner, telling PEOPLE in 2010, “I literally wake up and there’s just fur everywhere. It’s so awesome.” VIDEO: Ian Somerhalder ‘Almost Stole’ Grumpy Cat