How many dogs in the whole world are dead?

It's impossible to know exactly how many dogs have ever lived and died throughout history. Here's why:

* No Global Dog Census: There's no global database or record-keeping system for dog populations throughout history.

* Historical Data Scarcity: Accurate records of dog populations are limited, especially in the past.

* Variations in Lifespan: Dogs have different lifespans depending on breed, care, and other factors.

While we can't give you a specific number, it's safe to say that the number of dogs that have died throughout history is incredibly vast, considering how long humans have kept dogs as companions.