^ not sure that pigs are smarter or how we'd test that, but I agree with your general point.
Another I'll add is: there is nearly global acceptance of the whaling bans. But, some countries abuse the laws; some are Eastern (Japan) and some are Western (Norway).
Japan, in this case is abusing a law. They are lying by saying whaling is research. It is not research, they are whaling for food, and this is banned, globally, by signatories of the relevant governing bodies, including Japan.