"F" is for "Fogdog"

Fogdog  ("Miasmutt")

No. Enc.:  1d8 (2d6)
Alignment:  Neutral
Movement:  165' (55')
Armor Class:  5
Hit Dice:  3
Attacks:  1 (bite)
Damage:  1d6 + drain
Save:  L3
Morale:  9
Hoard Class:  None
XP:  155

The 5' long, 3' tall, hexapodic fogdogs are the companion beasts of the invading Uranians. They are used primarily to guard the gas giant methane generators, but also serve as scouts and hunting guides.

Upon a successful hit, a fogdog's siphoning snout continuously drains both 1d6 Hit Points and -1 CON per round, leaving its victim a withered husk.  Only the fogdog's death releases its hold.  (CON points recover at a rate of 1d4 per week, with proper hydration and rest.)

While deaf, their hypersensitive snouts and all-seeing eyes more than make up for any deficiencies.  Fogdogs are never Surprised, and can flawlessly track even the faintest trails.

Fogdogs share the same sensitivity to oxygen as their Uranian masters.

Mutations:  Extra Parts (Eyes, Legs), Frailty ("Oxygen Toxicity") [D], Increased Sense (Smell, Vision), Reflective Epidermis (Cold)