Cornish is a Celtic language formerly spoken in Cornwall, in SW England. It became extinct in the 18th century but apparently there are people today trying to revive it. Manx was spoken on the Isle of Man until a few decades ago when the last speaker died. It was related to Irish Gaelic. I suppose it would be useful if you had a Manx cat which refused to respond to commands in English.
A Romance language called Dalmatian died out in 1898 when the last speaker died. About 1% of the population of Switzerland speaks Romance dialects known as Rhaeto-Romance--they are so few in number it's thought that the language may eventually die out.
Or Hebrew -- which was nearly extinct in daily use, but taught for religious rituals, much like Latin. It was revived as the official language of the present-day State of Israel.
Cornish is a Celtic language formerly spoken in Cornwall, in SW England.
Popular with game hens.
Manx was spoken on the Isle of Man until a few decades ago when the last speaker died. It was related to Irish Gaelic. I suppose it would be useful if you had a Manx cat which refused to respond to commands in English.
Because otherwise, those poor cats would just be chasing their tails. Oh, wait.
A Romance language called Dalmatian
Are you Dr. Doolittle? What's with the need to talk to Manx cats and Dalmatians?