A little Nun or a regular Nun can only master a certain number of animals.
The Mother Superior is Mistress and friend of every animal.

Froggy Nun: "The Grandmother Superior has it under control."
Clumsy Nun: "Call the troops back."
Bear Cub: "Okay."
Hungry Nun & Grumpy Nun: "WHAT THE DUCK?!"

Perhaps later, they can stage a Teddy-Bears' Picnic.

Of course Mother superior would be able to tame the mama bear.

DammitCarl said:

Of course Mother superior would be able to tame the mama bear.

Mother Superior has a grand soul

I've heard of elderly women that wild animals fiercely them and protect them.
There was this Native American Blackfoot grandma I knew that lived in the woods.
When we'd visit her with a group of friends, and there would always be a wild pack of wolves that protected her and her home, you couldn't leave your car because 3 or 4 wolves would be howling and growling at you until she got there.