grass
grass
Crocodile
You're possibly talking about either a Klipdassie (or Rock hyrax in english) http://en.wikipedia.org/wiki/Rock_hyrax or a Dassie rat http://en.wikipedia.org/wiki/Dassie_rat i hope this will help :p
A group of Dolphins are called a Pod
A group of dolphins is called a pod. If that is your question.
A group of hens is called a brood.
A group of martens is called a "richness."
A group of grouse is called a "pack".
a group of Blackbirds is called a murder
The -OH group is called the hydroxyl group
A group of sentences is called a paragraph