In a bid to create as extensive a filmic dog death database (FDDDb?) as possible, the movies are identified by other users – essentially the categorisation is crowdsourced.
The efficiently-named Does The Dog Die? site allows you to search for a film before you’ve watched it and screen it for the death of any nice pups.
Movies are categorised into three groups: ‘No pets die’, ‘A pet is injured or appears dead but ultimately live’ and ‘A pet dies.’
This does, however, present complete anarchists with the opportunity of assuring people that the slobbery, affectionate French mastiff lives in Turner & Hooch (N.B. never watch this film).