*In '''cattle''' the [[Mediastinum - Anatomy & Physiology|Mediastinum]] is a tough membrane, in contrast to '''horses, dogs''' and '''cats''' where it is rather thin and more delicate.
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In '''cattle''', the [[Mediastinum - Anatomy & Physiology|mediastinum]] is a tough membrane, in contrast to '''horses, dogs''' and '''cats''' where it is rather thin and more delicate.
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*Birds do not have a pleural cavity as [[Avian Respiration - Anatomy & Physiology|Avian lungs]] do not have the capacity to inflate.
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'''Birds''' do not have a pleural cavity as [[Avian Respiration - Anatomy & Physiology|avian lungs]] do not have the capacity to inflate. The [[Respiration in Non-Homeotherms - Anatomy & Physiology|respiratory systems of non-homeotherms]] are also very different to that of mammals.
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*The [[Respiration in Non-Homeotherms - Anatomy & Physiology|Respiratory Systems of non-Homeotherms]] are also very different to that of mammals.