If you suspect that your pet has eaten poisonous plants, get them to a vet as soon as possible. Take a piece of the plant with you to show to the vet.
Poisonous plants for Fido:
Ficus, honeysuckle, irises, jasmine, hydrangeas, gladioluses, yucca trees
And for Kitty:
Impatiens, oleander, flax, chrysanthemums, mistletoe, daffodils, azaleas.