Old Gypsy Curse
Even a man who's pure of heart,
And wants some eggs for hatchin',
May become a chicken, when the feed is spread,
And the barnyard needs a-scratchin'...
<shudder!>
Good job, Mark. Although you realize that curse comes with a sex change, don't you? Roosters don't lay eggs.
Doesn't anyone consider the problems of bringing livestock along?
Collecting feed. Chickens need grain and bugs, not grass. Cows and big livestock need lots of grazing time. Pigs don't eat grass.
Predators. Every Fox and Racoon within smelling range is going to take a stab at making off with that chicken.
Noise. Sure, just try to be stealthy with a cage full of chickens.
Imagine the panic when the scent of Troll comes wafting across the camp site. Animals will bust their cages and ropes and/or hurt themselves trying to get away.
The noise...the distraction...the damage...the comedy.
Try not be tracked when you're leaving a path of feathers and crap behind you.
Speed of Moment. How fast does a cow meander down the road and how much effort must you put into that?
OTOH: When you're chased by something that wants to eat you, you have a ready made decoy on hand.