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NEW YORK (TheStreet) -- Retailers are betting that pets and space will be big with kids this holiday season. 

The stakes are high. In 2013, shoppers spent $602 billion on the holidays, according to the National Retail Federation. Much of that spending is on toys. Between Thanksgiving and "Cyber Monday," Amazon (AMZN) - Get Report fielded more than five toy orders per second from customers using mobile devices alone.

"Pet-related playthings have long captured kids' imagination," said Richard Barry, executive vice president and chief merchandising officer at Toys"R"Us in a statement, adding that this year, manufacturers like Hasbro (HAS) - Get Report are creating more pet-related toys, like Zoomer Dino and Go Go My Walkin' Pup

Toys"R"Us and competitors like Amazon, which just released its Holiday Toy List, spend the year preparing for the holidays, researching trends, spending time with innovative manufacturers, visiting toy fairs and reviewing new products.

"Toys"R"Us then tracks the data, tests select items in store and gauges consumer feedback, ultimately honing in on the key trends destined to influence kids' wish lists and parents' purchasing behavior," Barry told TheStreet.

Keep clicking to check out the four trends Toys"R"Us sees ahead.

This article was written by a staff member of TheStreet.