Leaving Your Animals 
A common mistake players tend to make is to leave their captive
animals (such as horses, cows, etc.) alone for a long time. When going
on a long journey, you may not think about how your animals may be doing
back at home. You need to visit your animals weekly, as they will die
without your acknowledgement of their existence. As long as you visit
them, they will not die because of neglect. If you have a cow use a
whistle to guide it. If you have a horse ride it. You can also choose to
feed them grass, rye etc. removed from the ground and thrown to them.
Jumping Fences
When you acquire a donkey, horse, or camel, a tip to keep them enclosed in their fence is to put a double fence
up for them to stay in. Donkeys, horses and camels can jump single
fences, and because of their walk around behavior, they will wander off,
jumping the fence if necessary. So you may go to bed with your animals
in a fence, but when you wake up, they may be wandering around! Double
fences can eliminate this trouble for good. Note that if you have a
tiger they can jump double fences. So for a tiger you will want to put
triple fences.
(Picture added by Stanimus on SC Wiki)
 |
Donkey can jump single fences |
Using Your Whistle
Although the whistle is a helpful tool in Survivalcraft, you need to
remember that your horses, donkeys, and camels will only come to you if
you are within a 30 block range. So it is not a good idea to allow your
saddled animals to wander about, thinking you can summon them with a
whistle. It is a good idea to keep your animals in a double fence, and
keep the whistle just for emergencies, etc. if you fall off of your
horse, and it continues to run, you can summon it again. Using the
whistle will also make cows and bulls run away.
More animal tips on SC Wiki Tips page:
http://survivalcraftgame.wikia.com/wiki/Tips%2C_Tricks%2C_and_Common_Mistakes