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FZ Uncle Penguin (LP)
RATW (Rock Around The World) New Jersey radio broadcast - "Un-Concert" material 
Sound quality: "on the cover, it says 'excellent quality', ha ha"
Label: Barking Penguin Records [YES! YES!] BPR 21789-5

Musicians: Frank Zappa, Jean-Luc Ponty, George Duke, Ian Underwood, Ruth Underwood, Bruce Fowler, Tom Fowler, Ralph Humphrey and Sal Marquez
The cover track list:

1. Intro
2. Pygmy Twylyte
3. Dupree's Paradise
4. "Uncle Penguin" [?]

5. Dog Breath
6. Penguin in Bondage
3. Nanook Rubs It
4. Saint Alfonzo's Pancake Breakfast 

See the "Un-Concert" for details.
The front cover has a penguin with a picture of Zappa, and the words "music is the best". The back cover has a hand-drawn of the Barking Pumpkin Records logo: a penguin has replaced the cat, saying "Shut Up" to the pumpkin. "Uncle Penguin" and "Barking Penguin" are my favourite bootleg title and label!
On Uncle Penguin's Brain, "Dog Breath Variations / Uncle Meat" is listed between "Dupree's Paradise" and "Penguin in Bondage", not any "Uncle Penguin". Tracks 4-5, "Uncle Penguin" and "Dog Breath", are surely "Dog Breath Variations" and "Uncle Meat" in some way and order.

notes from :
http://lukpac.org/~handmade/patio/bootlegs/concert_boots1971-1975.html#fzunclepenguin

cover:
http://www.bla.priv.pl/fz/vinyl/new_3/penguin.html