This book has a little girl or boy (perhaps age 4 or 5) hugging a different animal with an admonition related to each. For example, while hugging a penguin, "...try not to freeze up..." and while appearing to climb into the antlers of a moose, "...don't get stuck..."
The illustrations are soft and colorful, though the animal depictions are more fanciful than accurate. With the possible exception of a dog or cat, most children will not actually have the opportunity to make physical contact with the wide variety of wild animals (for example hugging the ankles of a giraffe) found here.
There are amusing descriptors like "sandwich hugs" showing two children with a koala in between, and a boy with outstretched arms and wide eyes saying, "too prickly" to an oncoming porcupine.
Although I am not an author, I do have an opinion from reading many, many books over the years to my children, about how this could have been written differently. The focus, I think, was to try to open up the topic of how children can hug people they want to, i.e. people they know. In my opinion a better book could show the different kinds of hugs a child might be offered or want to give and how to manage it, perhaps with a part about reading signals so that both parties find it enjoyable. Such a book would include information which would empower the child, which is I think the whole point that this author was trying to get at. Not forcing children to hug, but rather enjoying the ones they choose to give.
I give it 4 starts for broaching the topic, and engaging illustrations.