A
flea
feeds
on
the
blood
of
your
dog
.
The
flea
is
____________________
and
your
dog
is
____________________
.
This
is
an
example
of
____________________
.
In
the
tropical
regions
of
Africa
,
the
crocodile
lies
with
its
mouth
open
.
The
plover
flies
into
its
mouth
and
feeds
on
bits
of
decaying
meat
stuck
in
the
crocodile's
teeth
.
The
crocodile
does
not
eat
the
plover
.
In
this
relationship
,
the
crocodile
is
____________________
and
the
plover
is
____________________
.
This
is
an
example
of
____________________
.
Remora
fish
are
very
bony
and
have
a
dorsal
fin
(
the
fin
on
the
back
of
fish
)
that
acts
like
a
suction
cup
.
Remora
fish
use
this
fin
to
attach
themselves
to
whales
,
sharks
,
or
rays
and
eat
the
scraps
their
hosts
leave
behind
.
In
this
relationship
,
the
Remora
fish
is
____________________
while
the
whale
/
shark
is
____________________
.
This
is
an
example
of
____________________
.
In
Columbia
,
there
is
a
particular
tarantula
that
lets
a
frog
live
in
its
burrow
!
The
frog
eats
all
the
ants
that
come
in
and
try
to
eat
the
tarantula's
eggs
.
.
.
and
the
frog
doesn't
have
to
worry
about
being
eaten
by
any
predators
.
.
In
this
relationship
,
the
frog
is
____________________
and
the
tarantula
is
____________________
.
This
is
an
example
of
____________________
.
Humans
have
many
symbiotic
relationships
as
well
.
Humans
have
more
bacteria
and
other
microbes
in
their
gut
than
their
own
cells
!
These
microbes
eat
and
break
down
some
of
the
food
that
is
eaten
and
release
many
vitamins
The
microbes
are
____________________
and
humans
are
____________________
.
This
is
an
example
of
____________________
.
I
don't
know
about
you
.
.
.
but
mosquitos
LOVE
me
.
In
fact
,
I
think
my
blood
is
one
of
their
favorite
meals
.
I
can
always
tell
when
I
have
been
dinner
because
I
itch
like
crazy
.
I'm
just
lucky
they
have
never
made
me
sick
.
In
this
relationship
,
I
am
____________________
and
the
mosquito
is
____________________
.
This
is
an
example
of
____________________
.
The
egret
is
a
species
of
heron
that
moves
along
with
cattle
or
horses
.
Sometimes
it
can
be
seen
on
the
back
of
the
animal
.
The
birds
feed
on
insects
hiding
in
vegetation
,
which
get
stirred
when
the
animals
feed
.
When
the
birds
are
not
working
alongside
the
animal
,
they
hop
on
the
back
for
a
ride
.
They
are
light
birds
and
do
not
limit
the
movement
of
the
host
.
In
the
relationship
,
the
heron
is
____________________
and
the
cattle
are
____________________
.
This
is
an
example
of
____________________
.
We
even
have
a
symbiotic
relationship
with
our
pets
!
They
get
food
,
shelter
,
and
visits
to
the
vet
and
we
get
companionship
and
loyalty
.
Our
pets
are
____________________
and
we
are
____________________
.
This
is
another
example
of
____________________
.
