The only single word anagram for "habitat" is "Tabitha." Tabitha has origins in the Aramaic word for "gazelle." Tabitha is the name of a woman in the Bible who first appears in Acts 9:35 (New International Version).
Depending on how you define "anagram," you can form words using only some of the letters in the word "habitat." Examples of these are "habit," "that," "bait," and "bath."
There are many possible anagrams you can make if you use spaces to form multiple words. Examples of these are "hit a bat," "a bit hat" and "I at bath."
Arguably, it is impossible to form a single-word anagram from "habitat." Tabitha is a proper noun and is not found in a standard English dictionary. Also, as a proper noun, Tabitha must be capitalized, whereas the T in "habitat" is not capitalized.