जात स्वभाव न छूटे और टांग उठा कर मूते | Jaat swabhaav na chhoote aur taang utha kar mootay.

जात स्वभाव न छूटे और टांग उठा कर मूते ।
Meaning: A dog will always piss picking one leg up.
Usage: When you are sure a person will behave in a predictable manner because of his habits, you can use this proverb.