That is definitely true. The sad reality is that rabbits in the wild exist at the bottom of the food chain. To survive as a species, they have had to adapt to that reality. Early sexual maturity and short gestational periods contribute to the speedy propagation of their species. The gestation period for rabbits is approximately one month and they produce large litters.
Female rabbits can also become pregnant immediately after birthing a litter.
Unfortunately, the same biological mechanisms that have helped bunnies to survive as a species now contribute to the overpopulation of domestic rabbits. Shelters and humane societies are not always equipped to handle exotics and unwanted domestic rabbits are frequently sold as snake food or dumped in the wild where they cannot survive on their own. Spaying and neutering are the most effective means of halting the overpopulation of unwanted rabbits. In the hands of an experienced exotics veterinarian, spays and neuters are simple procedures which, should result in a healthy happy rabbit and rabbit owner. One of the most important things you can do for your new bunny is find a good exotics vet.