The difference between Dyson Cinetic Big Ball Animal and Dyson Cinetic Big Ball Animal + Allergy are slight.
The only difference on the main vacuum is that they have different color on the cyclone part. The Animal is purple whereas the Animal + Allergy is like gray.
There is also $100 price difference. The Animal + Allergy is priced at $699.99 whereas the Animal is priced at $599.99 on Dyson.com.
The price difference implies the included tools are different.
The Animal comes with a Combination tool, Stair tool, and Tangle-free Turbine tool for removing hair from carpets and upholstery.
Whereas the Animal + Allergy has all the tools the Animal includes, and also comes with a Reach Under Tool for cleaning hard to reach areas, a Multi-Angle Brush that allows you to twist to cleaning spots like door frames and lampshades, a Mattress Tool to clean mattresses and upholstery, a Carbon Fiber Soft Dusting Brush that can clean hard surfaces and crevices, and Accessory Tool Bag to store all of the cleaning tools.
Both of these 2 Dyson Cinetic Big Ball upright vacuum cleaners employ the Dyson’s Cinetic science cyclone technology, they have no pre motor filter, and do not require you to wash any filters.
They can generate 180 air watts suction power, feature Ball technology, self adjusting cleaner head, motorized brush roller that can be turned On/Off, 0.57 gallons dust bin, 35 feet power cord, and a Quick-draw Telescope Reach wand.
Both of them weighs approximately 20 pounds and carry 5 year limited warranty on parts and labor.