Beef Toothpick Cow Tail Dog Chew. Your pup will love this! These 100% all natural crunchy beef tails are smoked to perfection making them super delicious. Made from the leanest part of a cow these chews promote healthy teeth and gums. These toothpicks are sourced from North and South America. We suggest that you supervise while your dog enjoys any treat. Sizing: Tails range from 9 to 16 in. on average