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Yeah, I've heard this one many times.
In Russian we say "Чья бы корова мычала, а твоя бы молчала" (Whoever's cow is mooing, yours is better to stay silent"). Often it's shortened to "Чья бы корова...

I have a feeling that the most widespread Russian and English proverbs don't coincide... but there are some that do:

to beat about the bush -- ходить вокруг да около
birds of a feather flock...