Creature that divides to multiply AMOEBA
Take pieces from? DISARM ["piece" is toughguy for gun]
Horseplay sounds? SNORTS [from real horses]
Canine coat? ENAMEL [that's canine teeth]
It's bad to be behind them BARS
Crude cartel OPEC
White house? IGLOO
Whaler's direction THAR [as in "thar she blow"]
All done, in Verdun FINI [assonance is fun, and "fini" is seen in movies, etc.]
Lunes y martes, e.g. DIAS
French school ECOLE
Berlin conjunction UND
Arlington's state: Abbr. VIRG
"Turner on screen" for LANA could be Screen Turner.
"Banks of basebll" for ERNIE could be Baseball Banks.
"John with a colorful wardrobe" for ELTON could be English John.