Malcolm, whose frenetic home life is a kind of zoo, begins the fourth season by accompanying his family to the real thing. A visit to the zoo offers close encounters with creatures great and small. But Hal wishes he could have passed on an encounter ... (more)with Lois's former beau, who lectures on rain-forest animals. Elsewhere, Reese butts heads with a goat; and Malcolm and Dewey take a tumble into a tiger den. Another storyline checks in on ne'er-do-well Francis, now the unlikely foreman of a dude ranch owned by a cheery German businessman.

Angela Sargeant, Daniel Roebuck, David Ury, James Henriksen, Jeremy Forte, Ken Daly, Patrick O'Connor, Rhomeyn Johnson, Rocky McMurray, Teddy Lane Jr., Tim DeKay