What a LOVELY book - about love, loss and sacrifice essentially but very beautifully written and extremely moving and very positive. It's a great book if you know you will facing a bereavement to prepare the way. Age group about 3 upwards, possibly even from 2 1/2.
If however you have suffered recent loss it is very hard to read if you are sensitive. Even had my husband welling up.
Not religious so would not offend, and also sits well within a religious context too if wanted.
My son (almost 4) thought it a sad book, but also very much liked it and certainly I did not have any feeling of dwelling on death on his part.
It's a good read, beautifully illustrated and certainly introduces the concept of loss and selflessness in a very sensitive, poignant and positive way.