I think it would be extremely useful if we can see our selected pet's hunger status on the sidebar.
Why?
1. One day you log in and your pets are gone. You thought your food pen was stocked but they're in your graveyard. What's this? Food pen empty? My goodness, you never remembered to check.
Showing the hunger status would have prevented this. You can just glance at your selected pet whilst on the SB and see 40/100 and know hey, my food pen is empty.
2. You're killing creatu, but there are some creatu on your profile you want to keep alive. You're feeding them from your inventory but you have to keep clicking on the picture of each to check their hunger and feed some. You're now developing carpal tunnel syndrome from all the stress.
xD At CTS but really, it does hurt your wrists with all the excess clicking -_- You can check hunger status AND feed selected pets on the same page without having to click on each one to bring up the little window with all the stats. Makes life easier.
3. You're picking apples. Fun pastime. You want to check to see if you pets need to eat apples which is super convenient when you pick an apple to just click the "feed pet now" link, but you need to x that out, click on the pet's pic, hop on over to your inventory to search for the apple THEN feed them. Seems like a long process.
You can save so much loading and clicking around if you could just see your pet's hunger status on the sidebar.
What if adding hunger status crowds the sidebar? Then I think you can either take off pet type or gender. After a few days of playing Res, new users pick up on creatu types really quickly. After that, I don't particularly need to be reminded that the purple narwhal thing is a Narwi. You REALLY want to be reminded of the species? Then take off gender. I think it's the second least useful thing in that little info panel.
Suggestions, ideas, support? ^^