This was, without question, the most unexpected cartoon series of all time. Fred and Barney had been through the ringer with a few short lived FLINTSTONES spinoff shows, but their nadir came when some genius decided to partner them with a mostly forgotten peripheral character from the "Lil' Abner" comics of the late 40s/early 50's...a strangely phallic entity called a "Shmoo". What exactly a Shmoo *IS* has been a topic of debate for decades...a bowling pin with legs and whiskers? A walking bartlett pear? Nobody knows for certain, but the bigger mystery is how it ended up in the stone age, sleuthing mysteries with the beloved Flintstone characters.
Ill-conceived, flatly animated series which perfectly demonstrates how workaday and lazily produced Saturday morning fare had become by the late 70s.