one of our neighbors keeps their dog on a 6 foot cable to a pole.
The dog has actually dug into the ground trying to dig the pole out of the ground..hasn't suceeded yet.
that said
http://www.legis.state.tx.us/BillLookup/Text.aspx?LegSess=80R&Bill=HB1411
Sec. 821.077. UNLAWFUL RESTRAINT OF DOG. (a) An owner may
not leave a dog outside and unattended by use of a restraint that
unreasonably limits the dog's movement:
(1) between the hours of 10 p.m. and 6 a.m.;
(2) within 500 feet of the premises of a school; or
(3) in the case of extreme weather conditions,
including conditions in which:
(A) the actual or effective outdoor temperature
is below 32 degrees Fahrenheit;
(
a heat advisory has been issued by a local or
state authority or jurisdiction; or
(C) a hurricane, tropical storm, or tornado
warning has been issued for the jurisdiction by the National
Weather Service.
(b) In this section, a restraint unreasonably limits a dog's
movement if the restraint:
(1) uses a collar that is pinch-type, prong-type, or
choke-type or that is not properly fitted to the dog;
(2) is a length shorter than the greater of:
(A) five times the length of the dog, as measured
from the tip of the dog's nose to the base of the dog's tail; or
(
10 feet;
(3) is in an unsafe condition; or
(4) causes injury to the dog.