I wanted to know, does the feat allow you to take the animal companion of the Sylvan bloodline for your first level power elected by taking the eldrich heritage feat?
Probably not. Eldritch Heritage grants you single 1st level bloodline power while Animal Companion of Sylvan Bloodline counts as both 1st level bloodline power (replacing laughing touch) AND bloodline arcana, which is not covered by Eldritch Heritage.