Possible Clues:

• Water's a vital fluid when taking Ecstasy
• Show great anticipation
• Emulate Pavlov's dog
• Water in or out of awful lavatories
• Produce spittle
• Spurs' No.5, once quick round area, with time to dribble
• Show eager anticipation
• Pavlov's dog could do it to maybe save tail?
• Show eagerness maybe, making business transaction without one form of tax
• Drool when rising tardily about four