At 9th level, when in her favored terrain, for any summon nature's ally spells a feral child uses to summon animals that are native to that terrain, she treats the duration of the spell as if she were 2 levels higher.
At 17th level, when the feral child uses summon nature's ally spells to summon such animals, those animals gain a +2 bonus to both their Strength and Constitution ability scores. This stacks with the effects of the Augmented Summoning feat.
This ability replaces venom immunity and timeless body.