As mentioned in Salary, Victoria Stilwell and Caesar are among the most famous (current) animal trainers.
Ms. Stilwell, who originally trained as an actress, has a widely-watched TV show, It’s Me or the Dog (on Animal Planet) which airs in 50 countries worldwide, and created Victoria Stilwell Positively Dog Training, a network of positive reinforcement dog trainers. (The actress part may be her impetus for wanting to lead such a public life.)
Mr. Millan, whose show Dog Whisperer with Cesar Millan is broadcast in more than 80 countries worldwide, also founded the Dog Psychology Center in Los Angeles, has written three books and has a monthly magazine called Caesar’s Way. Millan is rumored to be worth approximately $45 million (and he’s had no formal training… in anything.)