SRD:Constrictor Snake

=CONSTRICTOR SNAKE=

Constrictor snakes usually are not aggressive and flee when confronted. They hunt for food but do not attempt to make a meal out of any creature that is too large to constrict.

Skills: Snakes have a +4 racial bonus on Hide, Listen, and Spot checks and a +8 racial bonus on Balance and Climb checks. A snake can always choose to take 10 on a Climb check, even if rushed or threatened. Snakes use either their Strength modifier or Dexterity modifier for Climb checks, whichever is higher. A snake has a +8 racial bonus on any Swim check to perform some special action or avoid a hazard. It can always choose to take 10 on a Swim check, even if distracted or endangered. It can use the run action while swimming, provided it swims in a straight line.

Combat
Constrictor snakes hunt by grabbing prey with their mouths and then squeezing it with their powerful bodies.

Constrict (Ex): On a successful grapple check, a constrictor snake deals 1d3+4 points of damage.

Improved Grab (Ex): To use this ability, a constrictor snake must hit with its bite attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can constrict.

See Wikipedia Entry: Snake