FranktheDM replied in my other thread (referenced above):
For Hunters Use Dire ape stats tweeked to your desires. maybe add a Vorpal claw leap o.k. maybe just improved crit
For lickers Give the hunters a 10' reach tounge attack.
Find the Wotc zombie template to add it to Dog, small and a few other beasts.
Use stats for a hawk, tiny and eagle, small for the Big Birdies.
Snakes, sharks and spiders are covered in the MM as well. {don't forget to have a few Tiny spiders on the big ones }
In Code: Veronica a purple worm showed up for no good reason.