The toxicity of maple seeds has not been studied at length, but the leaves of red maples (Acer rubrum) are known to be toxic to dogs. Since the leaves are poisonous, it would be advisable to keep pets away from red maple trees.
Melody Lee holds a degree in landscape design, is a Florida Master Gardener, and has more than 30 years of gardening experience. She currently works as a writer and copy editor. Her previous jobs include reporter, photographer and editor for a weekly newspaper.