Why and when stock market is called bullish or Bearsh?

Question

Why and when stock market is called bullish or Bearsh?

Answer 1

"Bull" and "Bear" characters of the stock markets are reflections of these two animals in attacking mode.

While attacking, bull throws the opponent upwards by his horns whereas bear has the tendency to throw the opponent down on the ground while attacking. Same way, when the markets experience the upward or downward moves, they are respectively called Bull and Bear markets.

Regarding answer to why, whosoever collectively dominate the market at a given point of time, get their earnings/profits and make the market bullish or bearish. Bull earns in upward moves whereas Bear earns in down trend.

What are you? a bull or bear?!

Answer 2

I heard an explanation for this terminology on one of the financial channels.  

Reference to the 'bull' is a reference to how the bull uplifts his horns from low to high, for instance.  The image of a bull's head being low to the ground, then suddenly rearing it upwards. It refers to market that is up or going up, a good market.

Reference to a 'bear' is a reference to the way a bear, if standing upright on his feet, paws forward and downward.  Imagine a bear with it's arms outward and pawing at something in a downward motion.  This refers to a market that is going down, or bearish.

These aren't my interpretations, but those in the stock industry that explained the symbolism of the bear and bull.