Animal Growth

[cshadow133]

(Previously asked in the wrong forum)

Greetings everyone.

I am looking for an Animal Growth adjustment to apply to an Animal Companion. DM is allowing the animal companions to Adjust sizes if their hit dice increase to the level they normally would.

Using the Size (+1) increase only gives +2 Str and -2 Dex, but the adjustments for Animal Growth (and animals gaining a new size) is a lot more of an increase. Anyone done this adjustment in the d20 system or have some steps to take that I can do to add it in? Maybe just by creating an alternate Size (+1) modifier?

Shadow