* Inbreeding: Dwarf rabbits are often the result of inbreeding, which can lead to a number of health problems. This can shorten their lifespan.
* Diet: Smaller rabbits may have a harder time getting the proper nutrients from their diet than larger rabbits. This can lead to nutrient deficiencies, which can also shorten their lifespan.
* Environmental factors: Smaller rabbits are more susceptible to environmental factors, such as heat, cold, and stress. This can make them more likely to develop health problems, which can also shorten their lifespan.
On average, dwarf breeds of rabbits have a lifespan of 8-10 years, while larger breeds can live for up to 12 years. This is just a general guideline, and there are many factors that can affect a rabbit's life expectancy. With proper care, any rabbit can live a long and healthy life.