A tail. Humans can walk upright without it because of the way our spines are curved.
Thumbs and the ability to walk upright
The only non-human primates without a tail are the great apes and regular apes such as gibbons . Of them the only one that walks upright all of the time is a Human. So the answer to your question is a Human. The other great apes can walk upright, but they do so only for short periods of time when needed.
the first subhuman to walk upright was Homoerectus (Upright Man).
most primates CAN walk on two feet, but choose not to.
Australopithecus could walk upright on two legs.
Some primates don't - remember humans are primates too! But for those that do, it's because the structure of their spine makes it difficult to stand upright. The reason they have spines curved like they do is because they're evolutionarily adapted to spending their time on tree-tops. Standing upright isn't useful when you're sitting in a tree.
One trait is that they walk upright. No oter mammel does this all the time.
Homo sapiens are modern Humans. most of us walk upright, but some don't.
The people who claim to have had close encounters with Bigfoot say that there is no way this creature could be a bear. Bears can walk on the hind legs, but they are not bipedel. Bigfoot is bipedel (walks upright). Bears don't throw rocks; Bigfoot does. Throwing stones is a characteristic of primates.
yea they can but they rarely do
humans and other creatures that walk upright are called
If you did not have bones, then you wouldnâ??t be able to walk upright. You would really just move around a bit like a blob.