Animals

Alpacas that feed on silica-rich plants partially wear down their teeth.

The division is not yet finally systematized, because since 1900, over 20 different classifications of these animals have appeared.

Both males and females look the same.

The laying of eggs is preceded by a period of courtship in which fruits are thrown at each other. The female usually lays two to four eggs a few days after mating. 

This discrepancy in time is because the fertilized egg may stay in the reproductive system for a long time before attaching to the uterine wall.

After the offspring hatch, the octopus dies of hunger because, after the breeding period, the digestive glands of these animals are deactivated.

They feed on fish, crabs, and prawns, but their favorite is squid.

Scientists distinguished six different sounds they use to communicate: screaming, rasping, whining, barking, whistling, and squeaking.

Both male and female participate in building nest.