a) they don't run away like an animal
b) you don't need to make a trap or other hunting device in order to kill it (sometimes you just need your bare hands)
But you don't know if the plants in your area are edible or not.
So to fix the problem, here is the edible plants test! (Whee)
Step 1: The VIRs (Very Important Rules)
1. Clean whatever you eat the best you can.
The plant might have animal leavings, germs or other contaminates on it.
2. Follow this test as to-the-book as possible as you might be paying the consequences, as whatever you are eating may kill you.
Also, in retrospect, some plants may be unresponsive to the test, but usually that is a small percentage.
3. Don't overeat on whatever you are eating. Your body might not be used to the species of plant you are eating. Also your body might not be used to all the fibre in the plant. It may cause digestion problems.
4. If you smell a peachy or almonds smell in your plant, leave it, as it is cyanide, a very strong poison to animals in general, including humans.
5. If an animal is eating a plant, doesn't mean you can.
Many animals have adapted to eating a specific plant, and sometimes the plant is poisonous. Some examples are monarch butterflies and poisonous milkweed, and koala bears and harmful eucalyptus leaves.
6. Never trust a mushroom, fungi, or anyone else in that plant family.
In the wild, safe fungi and mushroom can have many poisonous lookalikes. I would leave a mushroom alone, but if you are triple-checked sure that they are safe and you have eaten it before, then I suppose you can eat them.
Step 2: Separating the Plant
First, separate the plant into four parts; root, leaves, berries, and the stem. Test each part of the plant one at a time, as parts of plants can be poisonous while others are not.
Step 3: The Rub Test
Wait 45 minutes, while monitoring your body's reaction. Look for a rash, hives, dizziness, loss or shortness of breath, or puking. If you have these symptoms, do not eat the plant.
Step 4: The Lip Test
Step 5: The Tongue Test
Step 6: The Chew Test
Step 7: The Small Amount Swallow Test
Step 8: The Handful Swallow Test
Kudos! You just learned how to test an edible or non edible plant!
I'm sorry it takes a little long, but it would be worth it if you actually were in the wild. Please try not to cut corners as it might end up risking your life.