$9 for admission to a petting zoo for two, valid Monday–Friday (up to $17 value),
$14 for admission to a petting zoo for two on Saturday or Sunday (up to $24 value)
$17 for admission to a petting zoo for four, valid Monday–Friday (up to $34 value)

Children 23 months and younger admitted free. The Johansen Farms petting zoo is home to more than 500 animals, including miniature ponies, lambs, rabbits, chickens, deer, and alpacas.  I think these are much better options for people with young kids because they get bored so quickly.

Trivia fact:  The spring-fed pond at the end of my block (which sustains fox, red-tailed hawks, deer, coyotes and various fish species) was formerly a Johansen Farms field, where they raised corn and pumpkins!