The trouble with proverbs is they don't just go away. "We are more like the weaver bird than we are like the white ant," might not fall under the category of proverb. However something like "The Elephant has a large foot," could well fall under the category of proverb.
"When the custard is yellow the Onion rots," sounds like a proverb but probably
is not. As does "One foot on the ground is better than two in the grave." But
who knows. "Proverbs are more like snide little off hand and completely
than they are like algebra."