Giant Gecko Animal Companion Climb Speed

[Vilsetra]

I'm thinking of getting a Giant Gecko (Bestiary 3) as an animal companion, but I was wondering about its climb speed. As opposed to the monster version, which does have a 40ft climb speed, the animal companion does not have an outright climb speed in its stat block, but it does get a 20ft one by virtue of its expert climber special ability.

Am I reading the stat block correctly, and a gecko only has a 20ft climb speed?

[blahpers]

That's correct. Animal companions get only what is listed under their entries. An animal companion's rules should never require a trip to the base monster's stat block (if it has one) unless its animal companion entry references an ability that is only described there.