ultrafacts:

Dog Policy

Google’s affection for our canine friends is an integral facet of our corporate culture. We like cats, but we’re a dog company, so as a general rule we feel cats visiting our offices would be fairly stressed out.

Source: https://investor.google.com/corporate/code-of-conduct.html#toc-dogs

For more facts, Follow Ultrafacts

This has slightly shattered my dreams of working at Google, I’m terrified of dogs. =.=
I can tolerate quiet ones that dont bug me and stay away from me so there is still hope.