are
animals
with
a
backbone
.
There
are
five
groups
of
vertebrates
:
amphibians
,
birds
,
,
mammals
and
.
have
moist
skin
and
lay
eggs
in
water
.
have
feathers
and
lay
eggs
.
Fish
have
wet
and
lay
in
water
have
hair
and
produce
milk
Reptiles
have
dry
scales
and
lay
.