music: 60's Chart Toppers: Name The Artist: For Your Love?

Questions

In Pakistan, goats are often sacrificed to improve the performance of the ----------?

The word "puppy" comes from the French ----------, meaning "doll."?

The leech has 32 brains - 31 more than a ----------?

The cells which make up the antlers of a ----------?

Pigeons and hummingbirds have tiny magnetic particles in their heads that respond to the Earth's magnetic fields and are used for ----------?