Here is a 4x4 crossword with no black parts, meaning all squares must be filled in. Follow a crossword's way of placing the numbers that indicate the start of a word.
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Here are the clues:
Across
1.Insects
5.Organs of Sight
6.To torment or tantalize
7.Comfort and relaxation
Down
1. What lions do
2. What rats do
3. What dogs do
4. What mosquitoes do