mammalian vs squirrelly

mammalian

adj

  • like a mammal 

  • of, or pertaining to, mammals 

noun

  • Any mammal. 

squirrelly

adj

  • resembling a squirrel 

  • unpredictable or jumpy 

  • eccentric 

How often have the words mammalian and squirrelly occurred in a corpus of books? (source: Google Ngram Viewer )