There's been several studies conducted and this is their conclusion' - Who's Smarter (Who Did You Pick?)
How long is a cat 's memory span?
A cat's cerebral cortex contains about twice as many neurons as that of dogs. Cats have 300 million neurons, whereas dogs have about 160 million. In fact, cats have more nerve cells in the visual areas of their brain, a part of cerebral cortex, than humans and most other mammals.
Is a dog smarter than a cat?
While pet owners may have loads of anecdotal data to show that cats are smarter than dogs or vice versa, there's little scientific evidence to back up those claims. Simply looking at the structure of the animals' brains only reveals so much about their intelligence.
If you’d like to experience all of this (and more) for yourself, take a trip to your local animal shelter, which will likely have dozens of unique kitties waiting to claim your heart as their own.