Katy will be bringing that dog as a companion during the US part of the tour. Full stop. There will be no dog on stage as that would be animal torture, and most likely impossible to insert a "dog part" in a fully rehearsed show that does not include a dog for 3/4 of the world tour.
It wouldn't be animal torture if it's a specially trained dog. There are definitely dogs that appear in movies and TV shows. I was wondering if maybe Butters was such a dog. And, Kitty Purry appered in the video for "I Kissed a Girl" and the lyric video for "Roar", and I would think that a cat's hearing is at least as sensitive as a dog's.
Having Butters as a companion for the US part of the tour doesn't make a lot of sense to me, to be completely honest. Very few hotels allow pets, especially not dogs. And, while I understand that cats in general and Kitty Purry in particular do not travel well, I'm not sure how a dog would travel any better. If anything, a dog would need even more space, and somebody would need to walk the dog every day.
Several have said that Butters will be the mascot for the US part of the tour. Again, doesn't it seem strange to have a dog as a mascot for a concert that has a section where Katy dresses as a cat? And why would Butters only be the mascot for the US part of the tour?
Again, what I suspect is going on here is that somebody at Capitol Records feels that the tour would be more marketable in the US if it had a dog rather than a cat. I posted yesterday about dog people vs cat people, and how cat people do not dislike dogs, but dog people tend to dislike cat people, since our personalities clash. With the exception of Bill Clinton, most recent US presidents had a dog but not a cat (Clinton had both a cat and a dog). But I have been told that most (all?) UK prime ministers have a cat while in office (the Downing Street Cat). The US electoral system is very much based on personalities of the candidate. A person who has an interest in running for US president is more likely to have a pack mentality (rather than being an individualist) and is also more likely to have a Type A personality, and is thus more likely to be a dog person. In the UK, my impression is tha the party line is what matters, rather than the personality of the candidate, so a cat person can and is elected prime minister. Also, in the US, the president serves as both the ceremonial head of state as well as the head of government. The UK prime minister serves only as the head of government. The queen is the ceremonial head of state. I could be wrong, but I picture the royal family in general being more into dogs than cats.
Another reason why, at least in the US, that cat people dislike dog people is because it gets annoying constantly listening to dog people talk constantly about their dogs, while us cat people do not get that same opportunity, due to the stigma against cat people in the US. I have also mentioned in the past that the radio station that I typically listen to, in 2011, fired a very popular DJ who was a cat person, and replaced her with a DJ who is a dog person but otherwise has similar music tastes (both have mentioned many times that Katy Perry is their favorite artist). This is why I am wondering if in the US if she is being pressured to replace the cat section with a dog.
I beleive that someone posted that in Australia, there is a section of the audience called the cat section? I notice she is not doing that in the US (or even the UK). Again, can that be due to unfortunate pressure to de-emphasise her love of cats in the US?