Answer:

guineapig

Answer	Crossword Clue
GUINEAPIG	Test subject
GUINEAPIG	Experimental subject
GUINEAPIG	Lab subject

GUINEAPIG	Lab subject, often
GUINEAPIG	Lab animal
GUINEAPIG	It's not a swine
GUINEAPIG	Pet that's not porcine
GUINEAPIG	Experiment subject
GUINEAPIG	Subject in an experiment
GUINEAPIG	Hero of many an experiment.
GUINEAPIG	Pseudo porker

GUINEAPIG	New ... Latin
GUINEAPIG	One put to the test
GUINEAPIG	... It's a rodent native to the Andes