UH70210 vs UH70205
images from manufacturer

Let’s look at their titles first.
UH70205: T-Series WindTunnel Rewind Plus Bagless Upright Model # UH70205
UH70210: T-Series WindTunnel Pet Rewind Bagless Upright Model # UH70210
It seems that both of them have a cord rewind feature, and the UH70210 is designed for pets.

But what is it the real difference between the Hoover UH70205 and UH70210? Let’s compare them below.

Tools::
Yes, the UH70210 is a Hoover upright that is for pets. It comes with pet tools, including an Turbo Pet Hand Tool and a Pet Upholstery Tool, that are designed specifically for pulling up pet hair from furniture and upholstery. Both of these tools feature rubber blades for collecting hair.
While the UH70205 comes with a standard Turbo Hand Tool and a combo tool that can be used as a Dusting Brush or Upholstery Tool, they have no rubber blades.

Filtration:
As a pet vacuum, the UH70210 equips with Carbon Filter that can absorb smelly pet odors, while the UH70205 only feature a washable filter and HEPA filter that the UH70210 also includes.

Color:
The UH70210 is blue whereas the UH70205 is grey.

Price: UH70205 is $20+ cheaper than the UH70210.
UH70210 is priced at $159.99 while the UH70205 is priced at $135.99 at hoover.com. (prices checked on June 14, 2013)

You can learn detail about these 2 vacuum cleaners by reading the manuals.

Hoover UH70205 Manual Download Link from Hoover.com:
http://hoover.com/file/573/

Hoover UH70210 Manual:
http://hoover.com/file/574/

Similarities:
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• Backed with 2 year limited warranty.
• 13-1/2 inches nozzle width.
• They are bagless, so you do not need to keep buying replacement bags for them.
• They have motorized rotating brush, brush bar On/Off Switch for the needs of cleaning hard floors and carpeting/rugs, and 5 height setting options to fit different piles of carpet cleaning.
• They have 8 feet hose and 12-inch extension wand that provides long reach.
• 27 ft cable with cord retractor that saves you time and effort on rewinding the cord.
• Feature headlamp to illuminate low light spots for cleaning thoroughly.
• Feature folding handle for neat storage.
• Weigh 17.8 pounds.
• 12 Amps motor.
• Besides the turbo tool and upholstery tool, they also include a Crevice Tool.

Please share below if you know more difference between UH70210 and UH70205.