So many of the more popular trailing houseplants are harmful to pets if ingested, it's a pleasant surprise to find one that is not. Peperomia 'Amigo Marcello' has fleshy pointed leaves that can vary in color from a pale to deep green, depending upon the amount of light it receives. Mounding to less than a foot tall, 'Amigo Marcello' trails beautifully to at least 12 inches, but could grow longer. The amount of light determines how quickly a peperomia reaches its maximum size, but it prefers a well-lit room and higher humidity than is found in most homes.