MIR testing has shown that a canine brain reacts similarly to sound of joy and pain in much the same way as a human, meaning that dogs are able to understand the differences in human vocal intonation and the meanings behind them.
(Human likes dog. That why they say dogs can be your bestfreind they can ubderstand you.)
BINABASA MO ANG
Psycological Tips and Knowledge (Slow Update)
RandomRead for more information. It will shock you but educating.