A species is not considered a group because it refers to a specific type of organism that shares similar physical and genetic characteristics, while a group generally refers to a collection of individuals or objects with a common attribute or purpose. 6th grade writing

For example, a species like dogs includes all individual dogs with similar physical characteristics, behaviors, and genetics. On the other hand, a group of dogs could refer to a collection of dogs that are trained to perform in a show, or a group of dogs from the same breed living together in a neighborhood.

In summary, a species categorizes organisms based on their similarities in genetics and physical traits, while a group can refer to any collection of individuals or objects that share a common characteristic or purpose.