I have been thinking about some applications for the shapechange/transform spells and was hoping to get input and hopefully a concensus for some critters. Please feel free to add to the list.

Alligator (other totems not listed in critters)
Birds:
small: hummingbird, pigeon, sparrow
medium: crow, hawk, pelican, raven, chicken
large: albatross, eagle, ostrich, penguin
Camel
Chameleon (visability modifiers?)
Chimpanzee (could it use firearms, computers, etc.?)
Chipmonk
Cow
Dolphin
Earthworm
Egg?
Fish:
small: goldfish
medium: bass, trout
large: marlin, tuna
Frog
Hog
Insects?
Lizard
Mole
Mountain gorilla (same question as chimp)
Mouse
Octopus (8 melee weapons?)
Orca
Pig
Pony
Porcupine (what kind of armor?)
Skunk
Snakes:
small: garter
medium: copperhead, coral, cobra (venom ratings?)
large: anaconda, python
Spiders?
Spider Monkey
Squid
Squirrel
Turtle
Whale

Looking at Critters, it appears B is related to size, S can be 0, C is not a factor, I is about 2/4 unless the animal doesn't depend on sense of smell to hunt (or only sense of smell as shark) or has unique sense (bat), W is 2 with a few exceptions, E is 6, R is Q+1 for predators and Q-1 for herbivores

Alligator, B5/2 to 10/4 Q4 S8 I2/4 R5 Init5+1D6 Attack 10S
Birds:
small: hummingbird, pigeon, sparrow
B1 Q5 S0 I3/3 2L
medium: crow, hawk, pelican, raven, chicken
B2 Q5 S1 I3/4 3L
large: albatross, eagle, ostrich, penguin
B3 Q5 S3 I3/vary 4M
Camel
B10 Q4 S7 I2/3 6S +1 reach 2L ranged spit attack
Chameleon (visability modifiers?)
B1 Q4 S0 I2/3 2L +4 camo
Chimpanzee (could it use firearms, computers, etc.?) Yes, probably with feet, too.
B4 Q4 S4 I3/3 6M
Chipmonk
B1 Q4 S0 I2/3 2L
Cow
B8 Q3 S6 I2/3 4M (Bull would be higher)
Dolphin
B6 Q4 S5 I3/4 7M
Earthworm
B0 Q2 S0 I2/3 2L?
Egg?
B0 Q0 S0 I1/1 As thrown:)
Fish:
small: goldfish
B1 Q3 S0 I2/3 2L
medium: bass, trout
B1 Q4 S1 I2/3 2L
large: marlin, tuna
B3 Q4 S3 I2/3 4M
Frog
B1 Q4 S0 I2/4 2L
Hog
B4 Q3 S4 I3/3 5M
Insects?
B0 Q4 S0 I2/3 2L
Lizard
B1 Q4 S0 I2/3 2L
Mole
B1 Q3 S0 I2/2 2L
Mountain gorilla (same question as chimp) Many thing a human could do
B7 Q4 S10 I3/4 10S
Mouse
B1 Q3 S0 I3/3 2L
Octopus (8 melee weapons?) Maybe with levitation spell
B3 Q4 S3 I2/3 3L
Orca
B12/2 Q4 S20 I3/4 14D
Pig
B2 Q4 S2 I3/3 3L
Pony
B6 Q4 S4 I2/3 5m +1 reach
Porcupine (what kind of armor?)
B1/2 Q4 S2 I2/3 2L
Skunk
B1 Q4 S1 I2/3 2L ranged CS attack
Snakes:
small: garter
B1 Q3 S0 I2/3 2L
medium: copperhead, coral, cobra (venom ratings?)
B2 Q4 S1 I2/4 3L +venom
large: anaconda, python
B2 to 9? Q3 S2 to 10? I2/4 4m to 10D?
Spiders?
B0 Q4 S0 I2/4 2L +venom
Spider Monkey
B1 Q4 S2 I3/3 3L dexterity could do human attack
Squid (GIANT)
B8 Q4 S6 I2/4 6M
Squirrel
B1 Q4 S1 I2/3 2L
Turtle (excepting sea and very large)
B2/4 Q2 S1 I2/3 2 to 3L (snapping turtle?)
Whale
B20 Q4 S40 I3/3 Transform that troll sam into one on land, good luck with TN.

As far as the porcupine goes, here's what canon has to say about it's Awakened cousin.

I would think most critters would automatically get at least a partial camoflague bonus (Aside from obviously absurd cases like brightly colored parrots) simply because they're small and usually colored to match the ground. A chameleon only really gets good adaptive coloration when it's been sitting for a while, maybe a +1 to TN for every minute it stays without moving with a maximum of +6.

One reason I inquired was concerning the Shapechange and Transform spells. You need a Body score to calculate TNs. Also, it would be nice to know reach and damage codes.

How about stats for extinct critters? T-Rex, raptors, saber-tooth tigers, wooly mammoth, dodo... These are not para-critters, so are they viable for shapechange and transform?

Also saw someone mention changing sex. Is this a shapechange/transform ability?