The Twins Two by TwoBook - 1994
Twins Minnie and Max play at being pairs of different animals until, finally, they curl up to sleep, quiet as two little mice. Each double page spread features a picture of the twins opposite a vignette showing the animals they are imitating. The illustrations are exceptionally warm and lively. Good-humored and appealing.--Kirkus.
Publisher: Cambridge, Mass. : Candlewick Press, 1994, cc1992.
Characteristics:  p. :,col. ill. ;,23 cm.