Via @Criterion
The dog in the opening was trained to specifically destroy Godzilla dolls. They shipped the dog onto the set at the price of $20,000 a day. They had to hold cardboard boxes up in front of the Godzilla dolls to keep the dog from destroying them until it was time. Bay also notes that, as a rule, you “never kill a dog”. Pretty sure he’s just talking about on film, but I could be wrong.
