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kitty kitty
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6 years ago
If a rat receives a single painful stimulus from a small object in a test box containing commercial bedding material, the rat will usually investigate the object and then
 
  A) flee.
  B) bury it.
  C) dig a tunnel.
  D) escape.
  E) build a nest.
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summer123summer123
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6 years ago
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kitty Author
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6 years ago
Thank you, thank you, thank you!
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Yesterday
Good timing, thanks!
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2 hours ago
This calls for a celebration Person Raising Both Hands in Celebration
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