Vertebrates By Taxonomic Class

#$Fish   fish (non-human animals) (vertebrates) (sentient animals)

    An instance of #$BiologicalClass, and a specialization of #$Vertebrate. Each instance of #$Fish is a cold-blooded animal (see the collection #$Poikilotherm) with gills and fins. Each instance of #$Fish spends all or almost all of its life under water. Note that the collection #$Fish excludes fish-shaped examples of #$Mammal, such as porpoises and whales. Specializations of #$Fish include the collections #$Salmon, #$Catfish, and #$Tuna.
    guid: bd58df53-9c29-11b1-9dad-c379636f7270
    direct instance of: #$ProductType #$BiologicalClass
    direct specialization of: #$PartiallyTangibleProduct  #$Poikilotherm  #$Vertebrate  #$AquaticOrganism 

#$Bird   birds

    An instance of #$BiologicalClass, and a specialization of #$Vertebrate. Each instance of #$Bird is an air-breathing, warm-blooded, winged animal covered with feathers. Members of most, but not all, species of bird can fly.
    guid: bd58bc48-9c29-11b1-9dad-c379636f7270
    direct instance of: #$BiologicalClass
    direct specialization of: #$TerrestrialOrganism  #$AirBreathingVertebrate  #$OviparousAnimal  #$Homeotherm 
    direct generalization of: #$Waterfowl #$Penguin #$FlightlessBird

#$Mammal   mammals

    An instance of #$BiologicalClass, and a sub-taxon of #$Vertebrate. Each instance of #$Mammal is an air-breathing, warm-blooded animal which, if female, nurses its young with milk secreted by mammary glands. The skin of instances of #$Mammal is typically covered with hair (or sometimes hair modified into scales or plates, as in pangolins), but some types are almost hairless. All mammals other than the Monotremes of Australia bear live young rather than laying eggs, and have teats, which on females are used for nursing the young. Monotremes do not have teats, but both male and female produce milk from mammary glands.
    guid: bd58a628-9c29-11b1-9dad-c379636f7270
    direct instance of: #$BiologicalClass
    direct specialization of: #$HumanScaleObject  #$AirBreathingVertebrate  #$Homeotherm 
    direct generalization of: #$CarnivoreOrder #$Eutheria

#$Reptile   reptiles

    An instance of #$BiologicalClass, and a specialization of #$Vertebrate. Each instance of #$Reptile is an air-breathing, cold-blooded vertebrate with a body covered by scales or bony plates. Notable specializations of #$Reptile include #$Snake, #$Lizard, and #$Turtle. Most species of #$Reptile are oviparous (see #$OviparousAnimal), but some are viviparous (see #$ViviparousAnimal).
    guid: bd58f230-9c29-11b1-9dad-c379636f7270
    direct instance of: #$BiologicalClass
    direct specialization of: #$AirBreathingVertebrate  #$Poikilotherm 

#$Amphibian   amphibians

    A specialization of #$Poikilotherm and #$Vertebrate. Each instance of #$Amphibian isa a cold-blodded and smooth-skinned vertebrate that hatches from an egg to form an aquatic larva (see #$Larva), which then metamorphoses into an air-breathing adult (see #$AirBreathingVertebrate). Important subcollections include #$Frog and #$Salamander.
    guid: bd58e024-9c29-11b1-9dad-c379636f7270
    direct instance of: #$BiologicalClass
    direct specialization of: #$Vertebrate  #$Poikilotherm