Nature Sympathy (3.5e Feat)
From D&D Wiki
Nature Sympathy [General, Animal companion]
This allows for a character of any class to obtain an Animal Companion
Prerequisite: Level 6,Handle Animal Rank 10, Leadership
Benefit: A Character will now be able to attain an Animal Companion, such as the Druid and Ranger Classes, with a few changes.
Normal: A Character would not be able to obtain an Animal Companion
Special: An Animal Compaion obtained this way does not gain the share spells abilitiy like normal companions do. Insted it gains a +2 untyped bonus to Attack & Damage rolls, which increases to +4 Attack & Damage at 12-14th and +6 Attack & Damage at 18-20th level