This original version was given to me on my 4th birthday back in the late seventies. A book I will always remember affectionately for teaching me to count to 100, in a very subtle interesting way. It gave me a great confidence & passion for mathematics/ numerically inclined subjects and that 4 year girl old later went on study engineering at university.
Hence, to be recommended to a child perhaps at about 2-3 even if he/she looks at the pictures of various characters from the mother cat frying bacon sausages and eggs for her little kittens and other animal characters as firemen and fire engines, policemen. When ready, counting will come naturally to the child possibly with a little help from a parent.