Applying templates per druid class (Dragon Totem) and HD

[leem]

I made a dragon shamen. When I summon a lizard animal, I can apply either the young, advanced, giant, or advanced+giant template to adjust what level of summon I need to cast.

Do any of these templates affect an animal's hit dice? If I summon an advanced giant monitor lizard, does it still only have 3HD and I just calculate new HP based on a change of constitution?

Or does applying a template (like giant) also give it more hit dice? I thought increasing or decreasing size affected hit Dice, but I can't find a rule.

Thanks,

[Name Violation]

leem wrote:

I made a dragon shamen. When I summon a lizard animal, I can apply either the young, advanced, giant, or advanced+giant template to adjust what level of summon I need to cast.

Do any of these templates affect an animal's hit dice? If I summon an advanced giant monitor lizard, does it still only have 3HD and I just calculate new HP based on a change of constitution?

Or does applying a template (like giant) also give it more hit dice? I thought increasing or decreasing size affected hit Dice, but I can't find a rule.

Thanks,

Nope, no extra HD. Just bigger Lizzy's

[Conman the Bardbarian]

Totemic Summons (Su): At 5th level wrote:

a dragon shaman may cast summon nature's ally as a standard action when summoning lizards, and summoned lizards gain temporary hit points equal to her druid level. She can apply the young template to any lizard to reduce the level of the summoning spell required by one. She can also increase the level of summoning required by one in order to apply either the advanced or the giant template, or increase it by two to apply both the advanced and giant templates. This ability replaces a thousand faces.