 Or a bow tie just because. Sure, you might call him a little quirky. But that's exactly what makes him so perfect. Tuna is a three-year-old Chihuahua-Dachshund mix with more than 700,000 followers on Instagram. And it all started because he was adopted. You can't buy a best friend like Tuna. But you can adopt one. Help us save them all at bestfriends.org.