I think the 10 number is the number of animals that died in the manufacturers custody when they had them sample these pet foods after the complaints had gotten back to them.
Fasten your seat belts, this will become one of the largest class action suits ever. Canada, you in big trouble. We'd have looked the other way if you had decided to do something minor like annex Maine. But killing our pets means we are going to sick half of our lawyers on you.
While there may be a class action filed it may be hard to get certified. And the damages are not that much, as each animal can be replaced pretty cheaply. Recovery for injury to animals is for their replacement value only.