Species do respond to other species so yes they do communicate but usually this is not intentional: prey items may react to a predator by running away but the predator did not intend for this to happen. There are two types of communication: signals and cues. Signals are intentional, like birdsong aimed at attracting a mate. Cues are not intentional but other animals react to them anyway. Alarm calls of many birds are very similar so if say a blackbird gives an alarm call then lots of other small birds will react and fly away too. The signal wasn’t aimed at them but they still respond.
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