This job discusses the special sensory adaptations that are unique to mammals.
The main issue here is the word unique, I will try to come up with examples that I believe are unique, but in evolution you can usually find an exception to the rule. There are two ways to approach this question, so I will try to address both. You can either look for sensory adaptations that are unique to all mammals, or you can look at specific sensory adaptations that some mammals have. ...
Sensory adaptations are exemplified.