Otters

Otters are hostile mobs that attack you and drops can be from fish to emerald with sponges. 
== Otter drops ==
The following shows how rare the drops are 
Emerald- 15 % , Java Edition only 
Sponges- 37 % , all versions 
Cooked fish- 69 % , all versions 
Fur - 98 % , all versions 
XP - 100 % 
== Behavior ==
They are aggressive mobs that live in packs of up to 6 to 15 members but all have a command structure . The female is the dominant one for giant Otters and males for sea Otters ,usually a pair along with other Otters with some of their juvenile pups and babies are present . 
== Spawning ==
They spawn in areas where there is enough water for fishes to spawn but mostly are found in rivers, seas and oceans .