The utterly winsome Sammy (and his crabby, TV-narcotized sister) is featured in a fine little story from Whybrow (The Snow King, p. 806, etc.) about the pleasures of friends who happen to be of a different species. Up in the attic with his grandmother, Sammy comes across a box full of old dinosaur toys. He shuttles the box downstairs, doctors the dinosaurs that need doctoring, bathes and buffs them all, and then, next day, trundles to the library to discover their names. While this is going on, captured in handsome pen-and-wash artwork, the beasts shuffle about, but only to Sammy's knowledge. When every one of them is properly bestowed with a nameanchisaurus, brontosaurus, scelidosaurus, etc.the dinosaurs say, `' `Thank you, Sammy.' They said it very quietly, but just loud enough for Sammy to hear.'' Now fast friends, they nonetheless become separated when Sammy inadvertently leaves them on the train. Sammy is deeply unhappy; he inquires after them at the station, but the ``Lost and Found'' man says, ``How do we know they are your dinosaurs?'' A blind-identification test confirms that fact: `' `All correct!' said the man. `These are definitely your dinosaurs! Definitely!' `' Quietly, the dinosaurs concur: `' `You're definitely our Sammy. Definitely!' `' This is a beautiful, cheering story full of offbeat charm. (Picture book. 3-6) -- Copyright c1999, Kirkus Associates, LP. All rights reserved.