Sacrifice was done for two reasons:
1. As part of the act of repentance for unintended 'sin'.
2. To give thanks to HaShem (The Creator).
The types of animals that were acceptable for sacrifice are listed in the Torah. However, sacrifice didn't require animals, many other items were equally suitable, including fruits and vegetables, coins, and jewelry. When there is no Temple, prayer replaces sacrifice.
The Jews used to sacrifice animals as a tribute or offering to God. They believed that God would be kind to them if they offered up an animal. They were usually young animals because they were considered to be more pure and more valuble. They thought that the sacrificer must please God.
In the old testamen sacrifice is very often mentioned , as it was required by the Jews to offer animals like, doves and bulls as sacrifice.
Not for the last two thousand years.See:The sacrifices in the TempleMore about PassoverWhy the Temple was destroyed
Because Jews disagree about everything. However, Jews do not disagree that animals have rights; they only disagree on what those rights are.
All animals feed their young.
No. While Jews can have the surname Young, most people with this surname are Non-Jews.
Similarly they were treated like filthy, pointless, worthless animals But, Children Jew's was sent to the gas chambers and shoot-ed to death wholes some old Jews was killed upon arrival but most were forced to do hard, tough, physically labour
All animals with hair nurse their young.
Hitler was crazy, he hated all Jews.
Young birds are called chicks or chickens. Animals have various names for their young.
By slaughtering at the neck.
No, Jews do not hold any animals as sacred. However, there is symbolic significance to some animals.