The deaths of at least 14 cats and dogs from what appears to be tainted pet food have spurred more than a half-dozen class-action lawsuits. And along with money for vet bills, and the cost of the 60 million tins of recalled food, many are seeking added damages for owners' pain and suffering. Courts across North America already factor in the value of companionship in many different types of human relationships. Now the time might be ripe for similar calculations about animal friendship, says Wendy Adams, a McGill law professor. "There's a strong argument," she says. "You're not going to be laughed out of court."