Big Brown Bat

Mick, you're right about it being a type of fruit bat.

Further thought - Could it be a Fruit - Bat or commonly called the Flying Fox? - I have witnessed them in India and Malaysia when I lived there.

Looking at Smithsonian wild life website - It appears this is resident in Texas USA?
A maternity colony may include 20 - 75 adults and their offspring. Females in the eastern United States usually give birth to twins; those in the West usually have a single pup each year. Females may return to the same colony year after year. On warm, dry evenings, the bats leave the roost shortly after sunset to forage for insectsespecially flying beetleswhich they catch and eat in the air.