Pigs and Polar Bears in vanilla Minecraft gain so little love of the Minecraft developers which make them almost useless...what a shame...
Pigs drop pig tallow
pig tallow can be smelt to pig oil
pig oil is a brewing ingredient for brewing the slippery potion(make player slip like walking on ice)
nine pig tallow can be crafted to one pig tallow block
nine pig oil can be crafted to one pig oil block
Polar Bears drop polar bear skin
polar bear skin can be crafted into polar bear skin armor
polar bear skin can also be crafted into golden polar bear skin (by surrounding it with eight gold nuggets)
golden polar bear skin is the brewing ingredient for brewing the bearskin potion (enhance your armor)
Feel free to try it out
*This mod is still very crude and I just started learning modding...