Babies' cries sound a lot like lion and tiger roars at a much higher pitch and not just to their sleep-deprived parents.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/hyCIyhJFg7Y" height="1" width="1"/>
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Babies' cries sound a lot like lion and tiger roars at a much higher pitch and not just to their sleep-deprived parents.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/hyCIyhJFg7Y" height="1" width="1"/>