March 28, 2015 06:00 PM

Step aside Katycats: There’s a new dog in town.

Katy Perry has a whole routine centered on dancing cats wearing “cature” on her Prismatic World Tour, but it’s another four-legged critter – her dog, Butters – that has the singer’s heart these days.

“Butters comes everywhere with us,” Perry, 30, told PEOPLE at the world premiere screening of Katy Perry: The Prismatic World Tour at the Ace Theatre in Los Angeles on Thursday. “She’s such an amazing tour dog.”

After 129 completed shows and a handful to go, the Cavapoo (cavalier King Charles spaniel-poodle mix) keeps the California girl and her crewmembers’ spirits heightened.

“She brings this incredible joy because sometimes it can get incredibly tiring on the road,” Perry explained. “All of the dancers will come in and walk her, so she has a really good relationship with the dancers and the band.”

But someone who’s not walking her? Her world-famous mama.

“[My assistant] is her real mom and I’m her stepmom because I don’t pick up the doo-doo yet and I don’t like things waking me up at 7 a.m.,” Perry joked about assistant Tamra Natisin’s doo-ties (pun intended). “But she’s so great.”

Didn’t make it to the concert and want to see the amazing show behind Butters’ travels? Tune into EPIX on March 28 at 8 p.m. ET for Katy Perry: The Prismatic World Tour.

VIDEO: More stars gushing about their pet pooches

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