From a silent man, and a dog that does not bark, deliver us. (Spanish Proverb)
At twenty a man will be a peacock, at thirty a lion, at forty a camel, at fifty a serpent, at sixty a dog, at seventy a monkey, and at eighty nothing. (Spanish Proverb)
Watch out for the dog that doesn't bark and the man who says nothing. (Spanish Proverb)
Three things are not to be trusted; a cow's horn, a dog's tooth, and a horse's hoof. (Spanish Proverb)
Though my father-in-law is a good man, I do not like a dog with a bell. (Spanish Proverb)