Our nine-year-old tester was as much of a fan as our three year old, and while their results might have been slightly different, they both loved colouring in the pictures and asking plenty of questions about the animals they hadn’t heard of before.

If your kids are like my grandkids, you will be printing out the same ones again and again in the future so you will definitely want to save them for future use.

"I have really high preferences when it comes to art supplies. And this paper is so thick and beautiful. I'm so excited to start coloring. I love the markers as well! The colors are so gorgeous!"

This calming coloring book is chock-full of fun illustrations and "lovely images to set your imagination free." You'll feel relaxed and fresh in pelo time.

Gaining full access might take a little more effort (and premium membership, for complete access) than these other sites, but people truly into coloring will probably find it worthwhile.

Featuring 23 animals – from the giraffe and humpback whale to the more unusual sun bear and cassowary – this portable colouring book manages to appeal to all ages, thanks to the bold line drawings with just the right amount of detail to keep older kids busy.

We also love the idea of leaving one of the subscription boxes at the grandparents, so they will always have something to keep the kids entertained if needed.

I enjoy this color by number app. The pictures are lovely, there is a huge variety of coloring books free types to color, and the rewarded hints for completion are nice.

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The rave reviews for our adult coloring books continue to pour in! Specially designed for more experienced colorists, these inspiring titles offer highly detailed illustrations based on today's most popular and sophisticated themes. And according to CNN, FOX News, The Huffington Post, and other major media outlets, coloring is a great way for adults to relax and beat stress.

Handily, each illustration has the phonetic spelling alongside the dinosaur’s name (much appreciated when we were asked “What’s this dinosaur called?”). You’ll find all the old favourites here from Triceratops to T-Rex, as well as the giant sea monster Albertonectes. There’s a lot

We did this coloring search and find book as a family activity after dinner for several weeks — it was a blast! We liked how it combined coloring with a search and find. (If you want just a search-and-find book, you can buy the full-color Pierre the Maze Detective book.)

 doesn't have the sheer number of coloring pages that many of these sites have. And downloading the pages can be a bit of a project – to gain access to some of them, you will have to jump through a few hoops to help support the artist, Jennifer Stay. So what makes Coloring Bliss