Is one sow better than another for inclusion in group housing? Piglet No. 3 is not sure what to make of the empty kiddie pool where she finds herself standing at the University of California-Davis (UC-Davis) Swine Research & Teaching Facility. She grunts softly, sniffs at the ribbed-plastic floor and glances at the people watching her explore.
“See how she opens her mouth and sucks in air? Pigs use their strong sense of smell to gather information,” professor Kristina
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