The hound of Baskerville does not have access to the varied extracts of other investigators. Instead he relies on the steadfast services of his faithful animal companion.
Animal Companion(Ex): At level 1 a hound of Baskerville gains an animal companion as a druid equal to his level.
Animal Focus(Su): At level 1 a hound of Baskerville gains the animal focus ability as a hunter equal to his level. This ability includes the second animal focus gained at 8th level.
Hunter Tactics(Ex): At level 3 a hound of Baskerville gains the hunter tactics ability.
A hound of baskerville does not gain the alchemy ability, these abilities replace it completely.