TV POOCH is a term used to refer to a type of fictional canine character that has been featured in various television shows. The two most famous examples of this type of character are LASSIE and Ren, both of which have six and three letters respectively. LASSIE is a Rough Collie who has been featured in various films, television shows, and books since the 1940s. Ren is a Chihuahua who was featured in the animated television series 'Ren and Stimpy' from 1991 to 1995.