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echidnas
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1990-06-16
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ECHIDNA
Is there a %f,10,h\mammal%mammal that lays eggs?
Actually, there are three! There are
two %f,10,h\species%species of echidna that lay
eggs. And the platypus is also an
egg-layer. These animals are the
only ones in the %f,10,h\monotrem%monotreme (say
MON-uh-treem) %f,10,h\order%order. You can read
about the platypus under its own
heading.
The female echidna carries a
single leathery egg in a pouch that
forms on her belly at the beginning
of the %f,10,g\breed%breeding season. After about
ten days, the egg hatches. The
blind and hairless %f,10,h\offsprin%offspring, no
bigger than a raisin, sucks milk
from glands inside the pouch. The
young grows quickly. After several
weeks, sharp spines develop. Then it
can no longer remain in its mother's
pouch, but it continues to %f,10,h\nurse%nurse for
six months.
There are two kinds of
echidnas--long-nosed and short-nosed.
Both have long spines. They also
have heavy claws and sensitive
snouts. They use these to search for
food. The short-nosed echidna looks
for insects. It tears open logs and
underground nests and can easily
push over stones twice its weight.
Its sticky tongue darts in and out,
catching ants and termites.
The long-nosed echidna of New
Guinea eats mostly earthworms. It
hooks a worm on a row of tiny spines
along a groove in its tongue. Then
the echidna pulls the worm inside
its beaklike snout.
When %f,10,h\threaten%threatened, an echidna
%f,10,g\burrow%burrows straight down, sinking
rapidly into the ground. Or it may
squeeze into a hiding place. With
only its spiny back showing, it is
safe from danger.