Every year, about 18,000 dogs and cats are sold by “Class B” dealers to university and research labs. These middlemen find these animals through flea markets, free-to-good-home ads, and sometimes they find stray or lost pets to sell to these labs. The Humane Society is proposing a bill named Buck’s Bill that would make it illegal for these “Class B” dealers to sell pets with an unknown source like lost and stray pets to research labs. Under the bill, animals could still be sold to labs if they were sold by a breeder or donated by an owner or shelter. The bill is still pending before both the House and Senate committees.