I finally found some cards of the famous Cat-Dog Test :
The test consists of 13 line drawings. The first of these is clearly a cat which through successive small modifications gradually becomes a dog. In [figure above] are shown the first, seventh, and
thirteenth of the drawings, i. e . the clearest cat, the most ambiguous picture and the clearest dog. The subject is told:
I am going to show you some pictures that can be either a dog or a cat. Please tell me whether each picture is more like a cat or more like a dog. Take as much or as little time to respond as you wish This is not a test. There are no right or wrong answers Before I expose a card, I will say the word “ready ” Keep your eyes on the screen at all times. 
Judging from the literature , there is a strong correlation between a subject’s persistence on dog being cat and his/her authoritarian inclinations. When (as a student) I first read about the test, I thought: “How much should one despise the humankind to invent such a test?”. Unfortunately, in my later life I met a lot of people who would reach number 13 with flying colours.
 S. J. Korghin and H. Basowitz, The Judgment of Ambiguous Stimuli as an Index of Cognitive Functioning in Aging, Journal of Personality 25 n0. 1(1956), 81–95; doi:10.1111/j.1467-6494.1956.tb01290.x
They refer to
 E. Frenkel-Brunswick, Intolerance of ambiguity as an emotional and perceptual personality variable, Journal of Personality, 18 (1949), 108-143.
 I. Krasno, Authoritarian and egalitarian personality syndromes and intolerance of perceptual ambiguity. Unpublished doctor s dissertation, Univer. of Pennsylvania, 1952.
as developers of the Test. A general discussion of authoritarianism scales can be found in
 Review of: Emotional Flexibility-Rigidity as a Comprehensive Dimension of Mind by Sigvard Rubenowitz. O. J. Harvey, The American Journal of Sociology, Vol. 71, No. 5. (Mar., 1966), pp. 590-591. Stable URL.