Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1843 1844 - 1925 1926 - 1938 1939 - 1983 1984 - 2000 cats and dogs English
1800 - 1828 1829 - 1956 1957 - 1971 1972 - 1986 1987 - 2000 dogs and cats English

Run your own experiment! Raw data is available for download here.
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