Someone asked me to post a bit about llamas and packing with them.
Yes, they spit. Horses kick or bite, mules too. Dogs bite. Cats scratch...... My llamas do not spit at people (unless you really deserve it). They spit at each other over food or personal space.
A well conditioned pack llama weighs about 300 pounds. They can carry one third of their weight. They are very efficient with their food. My 6 llamas eat an amount that would starve a horse. They love, or at least mine love, to go packing. I notice them looking at the views, the trees, and the flowers (probably to eat). They are very alert and if you watch what they're looking at you'll see things you would have missed.
They are very smart and can remember a trail they hiked a year ago. Training is easy. If you can get across to them what you want, they'll usually do it. My two best packers are "bomb proof." Nothing on the trail scares them. They usually follow you with a slack lead rope. If they are exhausted, they'll lay down and won't budge. I wouldn't either.
A horse has a metal shoe with a 1500 pound animal on top if it. Each step lands toe first and lifts up a bit of dirt. That dirt gets washed away later and causes trail erosion. The llama, at 300 pounds, has a soft pad on the bottom of his foot. it's kind of like a dogs paw pad. Studies have shown that a fully loaded pack llama does slightly more damage than a hiker.
Gear isn't that expensive. A quality pack (Flaming Star makes the best) for a day hike is about $350. A set of long distance packs is about $500. All you need then is a halter and a lead rope and you're all set.
Horses..... well..... they are not the brightest things around. When they see a llama for the first time they often freak out. That's not a good thing on a trail. I've had a big tough stallion spook, and I've had a mare that thought my llama was cute and wanted to breed with him right there. That's why we can't hike with llamas on certain trails in Yosemite; the pack horses are not properly trained and spook when encountering llamas. To solve the problem all they need to do is place a llama in a pen near the horses food source. Eventually the horse will have to eat and in the process gets used to llamas. It's that easy.
Llamas need to be housed with other llamas, or some kind of companion. You can get a pair of geldings for $500 or so.
One of these days I'll post a short story I wrote about a hike I was on a few years ago.
If you have any questions, just ask.