(from a Disney sign) ... if you are afraid of mice, snakes, loud noises ...)
Would the animals have survived the trip? Particularly if the suitcase had to be gate checked and put in the unpressurized unheated baggage compartment?
(early 2011) Just one snake, originally draped around the neck of a passenger, caused an uproar on a Boston subway train when it got loose. The train was taken out of service, inspected, pronounced snake free, and returned to service. A month later the snake came out from hiding and the conductor on the that train that day captured it.
During the Beanie Baby fad, one air traveler with many of them in a suitcase was stopped at security when the X-ray screener reported "lots of animal carcasses" in the suitcases.
In an earlier lifetime my sister brought one hamster on a plane trip and it got loose (after being removed from its cage and fondled) in flight. The flight attendant announced "there is a guinea pig loose" and soon the hamster was captured and returned unharmed.