 Ana Platypuss full name is Ornithorhynchus anatinus, which is the  scientific name for the duckbill platypus. Rogers composed a song  called "Ornithorhynchus anatinus" for Ana. It spanned from episode  #1105 on 27 March 1970 (the day after Anas birth) to episode #1264  on 22 Feb. 1973.