There is supposedly 25 species of pirahna. Red pirahna, red bellied pirahna, red eyed pirahna, black shoulder/ ear pirahna, cariba pirahna(wich is the same as the black shoulder/ ear), piraya pirahna, black pirahna or rhom, gold pirahna or spilo, elongated or pike pirahna, brandtii pirahna, manuel's pirahna, geryi or violet line pirahna and compressus pirahna.
It depends on the type of pirahna
You got a pirahna with anorexia.
A flower may have thorns such as a rose does enabling it to passively defend itself .
it kill itself
You have to be 18 to watch the (2010) film pirahna.
a sea star defend itself by hiding under rocks year around
he defend his self by flying
how dose a boobook owl defend itself
by blending in
By biting.
An ox will use its horns, head, hooves, and weight to kill the enemy or defend itself.