Arboreal locomotion small branches, as they may wrap too far around and prick the animal's own paw. Adhesion is an alternative to claws, which works best on smooth surfaces. Wet adhesion is common in tree frogs and arboreal salamanders, and functions either by suction or by capillary adhesion. Dry adhesion is best typified by the specialized toes of geckos, which use van der Waals forces to adhere to many substrates, even glass. Frictional gripping is used by primates, relying upon hairless fingertips. Squeezing the branch between the fingertips generates a frictional force that holds the animal's hand to the branch. However, this
George H. Carroll Lion Habitat George H. Carroll Lion Habitat The George H. Carroll Lion Habitat is a , climate-controlled facility located on the campus the University of North Alabama that houses the only two live lion mascots in the United States, Leo III and Una. The lion habitat, which was dedicated on October 7, 2007, bears the name of the late owner of the construction firm Pressure Concrete, which built the facility and donated labor, materials and funds. No federal or state dollars or tuition fees were used in construction of the habitat. The habitat cost $1.3 million. Feeding and caring for the lions