Abstract
1. 1. Water absorption response (WR) behavior and water weight gain were examined in hydrated toads, Bufo woodhousei, treated with angiotensin II (All) or with a control Ringer's solution. The effects of urinary bladder condition ( ad lib. bladder urine or empty bladder) were examined concurrently. 2. 2. Toads treated with All (100μg/100g body weight), spent more time in WR posture and absorbed more water than Ringer's-injected toads. 3. 3. Toads with empty bladders maintained WR posture for longer periods of time and gained more weight than toads whose bladders were not emptied. 4. 4. The effects of All and bladder urine on water absorption by B. woodhousei appear to be separate and additive.
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