http://rarejobdailynewsarticle.blogspot.com/2011/08/dogs-can-recognize-smiling-faces.html

  1. canine
  2. cognition
  3. affection
  4. adapt

What are the common pets in your country?
Neutral” may also mean being fair by not favoring anyone. (e.g. The judge has to remain neutral while the case is on trial.)
“Canine” (noun) may also be used to mean a pointed tooth. See picture http://bozkateb.com/wp-content/uploads/2011/04/ama_preventive_oralhealth_lev20_theteeth_01.jpeg
Cognition also includes aspects such as ‘awareness, perception, reasoning, and judgment’.
The cignition of a child is very delicate.
What are the important things people should remember when keeping pets?
What do you think makes a research reliable?