I did find a few sheep but haven't explored too much. Been establishing a farm and preliminary mining cave and just realized after the first night I have not seen any hostile mobs spawning and I didn't figure out how to make charcoal for torches for about an in game week.
Lots of recipes have changed or have been tweaked to customise the pack to jasons exact 'requirement'
At the beginning NEI is your best friend!! Or hover over the item you want to know how to make and press 'R'
If you test the aggressive mobs thing in a creative flat world at night and let me know how it goes
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