The female red knee tarantula is often bigger than the male red knee tarantula and the female red knee tarantula also tends to be more aggressive. Female red knee tarantulas tend to live longer than the smaller male red knee tarantula due to the fact that they have a more fierce temperament.
The red knee tarantula is a carnivorous animal and preys on a number of other animals in it's natural environment. The red knee tarantula mainly eats insects along with small mammals, birds and reptiles that fall into the burrow where the red knee tarantula is hiding.
Due to the relatively small size of the red knee tarantula, the red knee tarantula has many predators across Central America. Birds, large reptiles and various mammal species all prey on the red knee tarantula, often waiting until the red knee tarantula comes out of it's burrow before attacking it.
The female red knee tarantula lays an average of 40 eggs which are laid in a silk sack generally between the months of May and August. The red knee tarantula babies hatch out of their eggs in about a month and it takes the red knee tarantula babies nearly a year to reach adulthood.