Optical Illusion on Junior's Book

Visually Perceived Image: Observe this Cow: Brainteasers: Tricky Puzzles: Impossible Objects: Observe this cow very carefully. Do you notice anything unusual about it?
[8/23/2011]
CATEGORY: Optical Illusion
TAGS: Observe Cow, Markings, Cows Back, Sideways Map, United Kingdom
Visually Perceived Image: Read this Secret Message: Brainteasers: Can you read this secret message? Print this page then tilt it to eye level and look in the direction of the arrows with one eye closed.
[8/23/2011]
CATEGORY: Optical Illusion
TAGS: Read Secret Message, Eye Level, Direction of Arrows, One Eye Closed, Optical Illusions are Magic
Visually Perceived Image: Chalk Line Formula: Brainteasers: Tricky Puzzles: Impossible Objects: Move just one single chalk line to complete the formula?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Single Chalk Line, Complete the Formula, Square Root of One
Visually Perceived Image: Numbers on Keypad: Brainteasers: Tricky Puzzles: Impossible Objects: The numbers on the keypad follow a certain logic. What number should replace the question mark?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Numbers on Keypad, Follow Certain Logic, Question Mark, Sum of Each Row and Column
Visually Perceived Image: Illustration of Crate: Brainteasers: Tricky Puzzles: Impossible Objects: Baffling Illusions: What do you see in this picture?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Illustration of Crate, Picture, Crate with Added Lines
Visually Perceived Image: Medal: Brainteasers: Tricky Puzzles: Impossible Objects: Look carefully and tell what do you see in this picture?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Medal, Picture, Two People having Argument
Visually Perceived Image: Number of F: Brainteasers: Tricky Puzzles: Impossible Objects: Using only your eyes, count the number of F’s in the above sentence. How many are there?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Number of F, Sentence, Using Eyes, Count the Number
Visually Perceived Image: Faces: Brainteasers: Tricky Puzzles: Impossible Objects: This picture hides the faces of Napoleon, Maria Louisa, and the young King of Rome. Can you find them?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Napoleons Supporters, Violets, Sign of Allegiance, Faces of Napoleon, Maria Louisa, Young King of Rome, Find Faces
Visually Perceived Image: Bell-Bottoms: Brainteasers: Tricky Puzzles: Impossible Objects: Can you see what’s wrong with this pair of bell-bottoms?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Pair of Bell Bottoms, Middle Leg
Visually Perceived Image: Numbers: Brainteasers: Tricky Puzzles: Impossible Objects: What’s so special about this set of numbers?
[3/20/2011]
CATEGORY: Optical Illusion
TAGS: Magic Square, Set of Numbers, Vertical and Diagonal Line of Four Numbers