Goats are pack animals, if you just have one, it will cry, LOUDLY, if you leave it alone. They love to climb and definitely will climb on cars, they love to be on the highest point they can, so the roof is usually where you find them! They are also escape artists!! Electric fence rarely works with goats, they figure out how to go through it, they can usually squeeze through, under, go over, whatever, most fences and/or gates. Speaking of gates, they can often figure out how to open those too! If there is feed of any kind, they will get into it, goat, dog, cat, chicken, horse, etc. Then they will eat until they make themselves sick. They can bloat, give themselves diarrhea, etc.
I love my goats, but they are definitely high maintenance!