Viejos Malditos (1970)

After the death of his wife, Elías, in his 80's, can't find a reason to live. A cat's visit comes just in time to shake up his routine and save him from loneliness. His companion invigorates his humdrum day to day, but with a new health diagnosis, he'll have to concoct a plan to ensure his cat's wellbeing. But his neighbors and his own son will get in the way of his plans.