Plant Identity/ Child Safe
This looks like a type of indoor palm. We cannot make an accurate identification from your photo and cannot offer advice about whether or not it is poisonous.
It is wise to place all plants and plant materials out of reach of very young children (including seeds, plant bulbs, soil and fertilizers).
You may want to contact the MD Poison Control for more information. http://www.mdpoison.com/
Also, here is a publication on Toxicity of Common Houseplants http://lancaster.unl.edu/hort/factsheets/031_ToxicityHouseplants.pdf