The Dilophosaurus was a theropod, so speed provided by bipedal locomotion would be an advantage to run away from larger predators of the Jurassic.
Also Dilophosaurus hunted in small groups, and that fact could be a protection from attacks of other theropod predators.
With a head that stood above the largest of carnivores during the late Jurassic period the Apatosaurus (Brontosaurus) was able to protect its head and neck from attacks from predators. The huge bullwhip like tail as discussed previously also served as an efficient weapon to defend itself from attacks from predators. This not to say that Apatosaurus (Brontosaurus) was not susceptible to attacks as can be seen from a Apatosaurus (Brontosaurus) vertebrae which showed evidence of attack from an Allosaurus.
http://www.jurassictimes.com/brontosaurus
Ankylosaurus's armor was so impenetrable that predators like Tyrannosaurus and dromaeosaurid dinosaurs probably never attacked an adult. If a predatory dinosaur attacked it, Ankylosaurus could have killed the enemy with a blow from its tail club.
In general, a dinosaur would flee from a predator if it could. Stegosaurus and Ankylosaurus, however, were slow, so they would have been best off standing their ground and fending off predators by swinging their tail spikes or club, respectively. Some ceratopsians could have defended themselves with their horns, and others with their beaks.
Young Allosaurus were either protected by their parents or simply ran to escape danger. Adult Allosaurus were 28 feet long and weighed somewhere between 2,200 and 8,800 lb depending on whose estimate you use. Because they were the largest predators in their habitat, the only significant threat to adult Allosaurus were other adult Allosaurus. They would have fought each other mostly by biting, but they may have also used their relatively strong arms and struck each other with their claws.
Dilophosaurus opened it's collar around it's neck and it spits this liquid
P.S. You all suck.
By it's clubbed tail and it's spikes on its back
A flower may have thorns such as a rose does enabling it to passively defend itself .
it kill itself
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.
Japanese beetles are winged insects. To defend itself from predators, it can either fly away from danger or burrow itself deep inside the soil.
An autotroph is an organism that creates its own food using an energy source, such as sunlight. Plants and algae are the most important autotrophs. However, like all animals, Brontosaurus is a heterotroph, meaning that it must consume an energy source. Brontosaurus consumed plants to get its energy.
Brontosaurus was an herbavore therefor it does not hunt. However Brontosaurus does move and graze in herds.
What i think that nosebottled dolphin to defend itself is by biting their enemy and swim away as fast as they can.