Make it the Boy and his Tiger Trio; Christopher & Tigger, Calvin & Hobbes, and add Billy & Tawny.
http://2.bp.blogspot.com/_V40qw_7QTG...12-24cap01.jpg
Edit:
-And maybe a young Prince Addam and Crinjer. [IMGhttps://i.pinimg.com/originals/6f/47...9d443b2888.jpg
- And I guess today you could add the stories of Pi & Richard Parker to this xover)