Josh had a vasovagal malaise, not a panic attack, and certainly not triggering his asthma. Inhalers don't work on unconscious patients without a spacer and a mask.
Absence of water in crocodiles' den: they need to spend lots of time in the water as well.
Way crocodiles are fed: huge pieces of meat are thrown at them, not small fish like one would feed penguins.
Bars around crocodiles' den: those animals need to be separated by a large pit and glass barriers, not bars.
Josh is seen inhaling a dose of his asthma medication to "ward off" a mild panic attack when first facing the city trip to school; this should actually make things worse as it make one's heart beat faster.
Lyle has a Canadian accent.
Trudy's video shows she is not overly talented and yet makes it to the show's finale.
Lyle is said to be a crocodile but he actually has more physical features that portray him as an alligator. Crocodiles have a V shaped snout and alligators have a U shaped snout, which Lyle has the U shape. Alligators also have only their top teeth show when their mouths are closed, crocodiles have a combination of both. Lyle only has the top showing like an alligator.