Mammals
include
____________________
-
blooded
animals
,
and
they
have
a
backbone
,
which
makes
them
____________________
.
One
of
their
characteristics
is
that
they
have
hair
and
a
well
-
developed
____________________
,
more
than
other
types
of
____________________
.
The
blue
____________________
is
the
biggest
animal
on
Earth
.
They
feed
on
krill
,
which
makes
them
____________________
,
and
they
live
in
the
ocean
.
They
often
swim
in
____________________
groups
or
alone
.
The
African
elephant
is
also
considered
a
____________________
.
They
feed
on
____________________
,
so
they
are
herbivores
.
As
well
as
the
blue
whale
,
the
____________________
Elephant
lives
in
society
.
The
Brown
Bear
is
a
____________________
,
too
.
They
feed
on
salmon
and
plants
,
meaning
they
are
grouped
under
the
____________________
type
of
animals
.
They
live
up
to
25
____________________
.
Another
characteristic
of
mammals
is
that
they
feed
their
young
with
____________________
.
We
,
____________________
,
belong
to
this
group
,
too
.
