1. Animal characteristics chart
Invertebrates Fish Amphibians Reptiles Births Mammals
Types of
reproduction
(sexual/asexual)
both
Types of
fecundation
(internal/
external)
Types of embryo
development
(oviparous/
viviparous/
ovoviviparous)
Oviparous.
(ovoviviparous:
shark)
Type of
breathing
(branchia/lungs)
Type of skin
(scales, nude
skin, fur,
feathers,
exoesqueleton,
others)
Exoesqueleton
Nude skin
Others
*Some animals can have exception in the group. You need to write both types in that cases,
Specifying the exception name in brackets (for example: Fish are oviparous except shark that is ovoviviparous)
2. Animal characteristics chart
Invertebrates Fish Amphibians Reptiles Birds Mammals
Types of
reproduction
(sexual/asexual)
both Sexual Sexual Sexual Sexual Sexual
Types of
fecundation
(internal/
external)
Both External
(internal:
sharks)
External
(internal)
Internal Internal Internal
Types of embryo
development
(oviparous/
viviparous/
ovoviviparous)
Oviparous Oviparous.
(ovoviviparous:
shark)
Oviparous.
(ovoviviparous)
Oviparous
(ovoviviparous:
some snakes)
Oviparous Viviparous
(oviparous:
platypus>>
ORNITORRINCO)
Type of
breathing
(branchea/lungs
/trachea)
Trachea
branchea
Branchia Branchia
Lungs
skin
Lungs Lungs Lungs
Type of skin
(scales, nude
skin, fur,
feathers,
exoesqueleton,
others)
Exoesqueleton
Nude skin
Others
Scales Nude skin Scales Feathers Fur
Skin
*Some animals can have exceptions in the group. You need to write both types in that cases,
Specifying the exception name in brackets (for example: Fish are oviparous except shark that is ovoviviparous)
