Braid a horses mane like a persons hair, there isn't really anything different between the two.
No. Buckskins can have black, brown and dark brown manes and tails.
yes, compared to up-kept domestic horses manes and tails.
There is no reason not to plait or braid an Arabians mane unless it is against show or association rules. However many Arabians with longer fuller manes look good in a running or french braid.
yes foals have tails they are just very small
Bay horses can be any size, as bay refers to a coloring of horse, in which their body is brown, and they have black manes, tails, and points.
Not all roping horses have braided tails. There are many events where a rider may braid their horses tail because it helps keep it out of the way.
Not all wild horses have erect manes and not all domestic horses have 'floppy' manes. Some wild horses developed erect manes to help with camouflage and cooling. While domestic horses and other wild horses mainly have floppy manes to help shoo away bugs.
A horse's tail is thick because it helps to flick off flies that land on its buttocks. It has movement in its tail by using the dock, a small bone surrounded by muscle that is hidden under the top of the tail. Many ponies are sought after for their thick and lush manes and tails. For example, heavy breeds and cobs naturally have thick manes and tails, and fell and dales ponies have enormously long manes and tails. Thick tails are also nicer to work with when showing or competing, as can be very easy to plait.
Mustangs are often shorter, stocky horses with straight profiles; they often have generous manes and tails. They also come in just about any color you can think of.
Yes, bay do horses have black manes or very very dark brown.
No, not all horses have manes. Some horse breeds, such as the Akhal-Teke and the Andalusian, are known for having less prominent or even absent manes.