Nylon carpet fiber is highly recommended for homes with pets because of its durability, stain resistance, and strength. Dense, low pile styles further withstand paws, accidents, and heavy activity from pets. Wool blends also hold up well to spills but require specialized cleaners approved for delicates. Avoid silk or other delicate natural fibers prone to pulling, tearing or wicking liquid through. Synthetics stand up better for the long haul. Also opt for low VOC carpeting since pets spend so much time at floor level.