07/27/2011 AT 5:35 PM ET
Miranda Cosgrove, the 18-year-old star of Nickelodeon’s iCarly, has had the same best friend for the past 12 years: her toy poodle, Pearl.
So when the actress and singer was about to embark on her first concert tour this summer, she debated whether to let her petite gray pup tag along. “I wanted to bring my dog on tour really badly, but she’s very old and I wasn’t sure if she would be able to handle touring life,” Cosgrove tells PEOPLE.
After so many years of spending time together, Pearl knew something was amiss when Cosgrove started getting ready to take off. “She’s very smart,” Cosgrove says. “She watches movies with me sometimes, and she knows the bad guy before I do, so she totally understood that I was packing and leaving.”
But as much as Pearl doesn’t like the idea of being home without her old friend, Cosgrove feels the same. “I’ve been calling my dad and asking how she’s doing,” she says. “He said that she’s been waiting on our couch and looking out the window for the last few nights. I miss her.”
Check out the rest of our studio interview with Miranda Cosgrove in the video above!
[RELATED_TEXT “Can’t get enough pet news? See more on PEOPLE Pets