Ultimate crossword

123456
Across
  1. 3. what do you open when you wish to enter a house?
  2. 4. type of cartoon involving Japanese style drawings
  3. 5. What three letter pet animal starts with c and ends with t?
  4. 6. This paints an image in the painters mind
Down
  1. 1. Man’s best friend
  2. 2. the name of this puzzle
  3. 3. This is a hemispherical structure on buildings