Did you know that some plants can be more dangerous to our furry friends than we think? When it comes to cactus, the answer is a resounding no dogs should not Many common indoor and outdoor plants contain calcium oxalate crystals, which can cause intense mouth and skin irritation. These sharp crystals can stab the tongue, gums, and throat when chewed, Prickly Pear Cactus Opuntia Urbane Eight Inc. Ikea succulents Hello! Recently bought assorted succulents from Ikea. I don't normally buy from assorted sections even in local nurseries because I'm obssessed with knowing the correct names. But the hoarder Red Veined Prayer Plant Maranta leuconeura 'Erythroneura' leaf [ HOME GIFT PLANTS BLOOMS ] LiveTrends Black Cardinal Philodendron erubescens House plant in 6 Inch(es) Pot 1 Pack in the House Plants department at Lowes.com