Puzzle 18

"Can't teach a dog new" these, puppies however….

A, E, I, O and U.

To be strong and steady; dense and unwavering.

Units to measure fineness and purity of gold.

Protective headgear for extreme sports.

Sedative also known as diazepam.

Tropic of __, line running at 23 degrees N.

A quick look or a look to the side.

Profession that Che Guevara trained for.

AM and FM audio players.

Helical spring toy that goes down stairs.

Mid-arm joints.

Type of headgear worn by Abraham Lincoln.

Fermented milk drinks from Russia.

Animation pioneer Walt.