by Finn Frode
Clauz in The Guiness Book of Records, 1970
According to the Danish version of the 1970 Guiness Book of Records, the fattest cat known at that time was Clauz, a tabby tom living in San Francisco around 1950. In that year Clauz was 8 years old and weighed 18 kg (39,7 lbs). He meassured 91 cm (35,2 inches) around the waist.
The Guiness Book of Record is renowned for getting their facts straight, but there may of course have been other fat cats around, who went unknown or unrecognized. According to Michael's article 'Fattest Cat In The World', Dinky of Gloucestershire, England weighed 19 kg in 1955 and from 1970 and on even heavier cats are known.
I had forgotten all about Clauz, when I happened to come across the old record book, stored away years ago, but I instantly recalled the picture when opening that page. A frightening sight, but also a bit intriguing. There does not seem to be any information about Clauz on the net, so in case you have any, please let me know.
Being as obese as Clauz is definitely unhealthy and will shorten the cat's life. Allowing it to happen could probably be seen as animal abuse, which is exactly the reason Guiness stopped listing obesity records several years ago. Your cat won't worry about obesity, so keeping it's weight at a reasonable level is your responsibility and yours alone.
Source: Først og Størst, Guiness Rekordbog, Politikens Forlag, Copenhagen 1970. According to the colophon, reproducing short sections of this book is allowed provided credits are given.