Spike and Mike (litter mates) both know that they are going to the vet and hate going to the vet, but for different reasons. They share a carrier, not because they want to, but because I insist.
Spike is a howler and Mikey has sensitive ears. If they are in separate carriers, we have to listen to Spike shriek the entire time. If they are together it is more like: shriek, whack, shriek, whack, shriek, whack and then blessed silence from Spike who is sick of getting hit by his brother every time he (Spike) opens his mouth.
However, when they get to the vet, it is reversed. Mikey starts yelling: LET ME OUT NOW!!! He won't stay in the carrier when there are new people around to admire him, pet him and rub his belly.
Spike hides in the back of the carrier and tries to make himself as small as is possible for a 24 pound black cat.
It is a royal pain to get his royal highness (Mikey) back into the carrier since he thinks that there might still be a person who hasn't had the chance to admire him/rub his belly out there. The vet says that they have never known a cat yell to be let out of the carrier at the office before they met Mikey.
The girls try to hide, but they are resigned to their fate and once they are put in their carriers they just huddle there, waiting miserably for it to be over with.