Free roaming red-knee tarantulas prey on bugs, bugs and more bugs. They … Tarantulas don't need to be fed often, but that doesn't mean caring for them is easy. When tarantulas hatch, they’re often referred to as EWLs, which is an acronym for “Eggs With Legs,” and as you can imagine their prey must be small and harmless. A diet of crickets, supplemented with other insects, is fine for pet tarantulas and adults only need to eat about once a week. At home, the owners feed the pet spiders live crickets, cockroaches, larvae. Tarantulas are known to be the world's most massive spider species, and these hairy eight-legged creatures are both feared and beloved. A wide variety of animals are the favorite foods of the tarantula. Spiderlings can easily consume 5 … Pet tarantulas can be feed one to two times per week. Most tarantulas can be kept in the range of 70-75 degrees Fahrenheit, which is room temperature in a warm home. Tarantulas are nocturnal predators that eat almost all insects as well as little mammals, which are smaller in size. Some tarantulas grow much faster than others. Tarantulas can vary significantly in how much and how often they eat. Red-knee tarantulas eat mice and bugs both in the wild and in captive environments, as well. In other words, most tarantulas do not require supplemental heat in all but the coolest households. Some factors that can affect how often tarantulas eat can include: Species of Tarantula. How Often Do Tarantulas Eat? While the tarantula may be able to kill and eat a mouse that is its size, the mouse can cause serious and even fatal injuries. Although the basic diet of the wild Mexican red-knee tarantula consists of insects, they also occasionally do eat reptiles, frogs, birds and smaller mammals, such as baby mice. A good rule of thumb is that tarantulas should be fed prey items that are the same size as its carapace or head-peice. This means you will be caring for a community of crickets as well as caring for a spider. How to Feed a Tarantula. Here … How often should I feed my tarantula? What Do Tarantulas Eat? Some owners may try to mimic how a spider would eat in the wild and offer meals at random (maybe a couple of crickets then one cricket several days later, then a few crickets a … Tarantulas are carnivores – meaning that they eat other animals. Your tarantula eats live prey. But when it comes to choosing what type of animal tarantulas are rarely fussy.In essence, they’ll eat anything that they can overcome.. At the bottom end this means that they will eat a range of insects, from moths and grasshoppers, to termites and crickets.