Other mistake: After the great fire scene there is a raccoon that drags her baby to shore and begins cleaning it. A few seconds later the baby has jumped across to the other side of his father and siblings, but the mother does not stop licking.
Other mistake: When the young Bulgarian man is winning at roulette, thanks to Rick, the croupier spins the wheel and releases the ball. When the ball lands on 22, he shouts, "Vingt et deux, noir farez pas." This means, "Twenty-two. The black didn't make it." The problem is, 22 is a black number. The black did indeed make it.