In the Prologue to 'The Fellowship of the Ring' hobbits are said to have had their beginnings far back in the Eldar days, though records from this age are lost or forgotten. Somewhere in the 2nd age they left their lands by the Anduin and began their journey over the Misty Mountains and eventually settled the lands they called the Shire. This is when most of the hobbits own records date from.
No, Hobbits are fictitious characters
Hobbits can speak because they were able to talk to humans
Hobbits are also known as halflings.
Hobbits are a product of fiction. They never really existed.
Yes, they are hobbits that live in the Shire.
Hobbits did not live in trees. The opposite in fact; they lived in holes in the ground. Some Hobbits lived in houses. Hobbits do not like heights and do not even sleep upstairs.
The three types of hobbits are Harfoots, Stoors, and Fallohides.
J.R.R. Tolkien created hobbits in The Hobbit and The Lord of the Rings.
Hobbits might exist just check out this article: http://www.independent.co.uk/news/science/the-foot-that-may-prove-hobbits-existed-1680405.html
I am sorry to say that Hobbits do not exist in the real world. So Hobbits cannot be mean in real life since they are not in real life.
At the end of the Third Age hobbits had settled in the Shire, and in Bree-land (where they lived alongside a human population), both in Eriador (a northwestern region of Middle-earth). The oldest known homelands of the hobbits were in the nothern valley of the Anduin River earlier in the Third Age. There also was at least one small settlement of hobbits left in the Anduin valley as recent as 500 years before the War of the Ring, where Sméagol/Gollum was born.
Hobbits are creatures of fantasy created by J.R.R. Tolkien. They do not exist in real life.