What is the collective noun for greyhounds?

There isn't a widely accepted collective noun specifically for greyhounds. However, some options that could be used include:

* A pack of greyhounds - This is a common collective noun used for hunting dogs.

* A kennel of greyhounds - This refers to a group of dogs kept in a kennel.

* A course of greyhounds - This refers to a group of greyhounds racing together.

Ultimately, the best collective noun to use depends on the context and the specific group of greyhounds being discussed.