Pup, at times

• Pomeranian, for one
• Distressed dog, for example
• Noisy pooch
• One making shrill barks
• Shrill barker
• Barker
• Unknown East Ender’s assistant, one emitting shrill cries

Wiktionary Word definitions in Wiktionary
n. One who yelps.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Tattler \Tat"tler\, n. One who tattles; an idle talker; one who tells tales. --Jer. Taylor. (Zo["o]l.) Any one of several species of large, long-legged sandpipers belonging to the genus Totanus . Note: The common American species are the greater tattler, ...