There are many bacteria that grow in clusters, but the most famous and common example is Staphylococcus.

Here's why:

* Staphylococcus literally means "grape-like cluster" and is a genus of bacteria that commonly form grape-like clusters.

* Other bacteria that can form clusters include:

* Micrococcus

* Streptococcus (though they typically form chains)

It's important to remember that bacterial morphology, or shape, can be influenced by factors like:

* Growth conditions

* Age of the culture

* Nutrient availability

So, while some bacteria are known for their characteristic clustering, they might not always form clusters in every situation.