Complex sentence: Their colors can be white, red, black, or blue, and can weigh between 4 to 5 kg (10-12 pounds) when fully grown, making them one of the larger breeds of rabbits.
Split into simpler sentences: Their colors can be white, red, black, or blue. When full grown, they can weigh between 4 to 5 kg (10-12 pounds), making them one of the larger breeds of rabbits.