If each image contains exactly one hound, and the dogs in the left and right images share similar fur coloring and body poses.
return images ;return hounds in  #1 ;return number of  #2 for each  #1 ;return #1 where  #3 is equal to  one ;return number of  #4 ;return number of  #1 ;return if  #5 is equal to  #6 ;return the  left image ;return the  right image ;return dog in  #8 ;return dog in  #9 ;return fur of #10 ;return fur of #11 ;return coloring of #12 ;return coloring of #13 ;return if  #14 is similar to  #15 ;return body pose of #10 ;return body pose of #11 ;return if  #17 is similar to  #18 ;return if  both  #16 and   #19 are true ;return if  both  #7 and   #20 are true
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