Everyone's favorite Little Critter imagines how things will be when he grows up in this two-in-one picture book featuring the Mercer Mayer classics When I Get Biggerand When I Grow Up! Mercer Mayer's Little Critter and his little sister wonder how things will be when they grow up in these funny and heartwarming classic stories. Featuring When I Get Biggerand When I Grow Up,this two-in-one picture book is an endearing look at how children see their future as adults, encouraging them to dream big.