Mandevilla Flower Dog. If this is the case the yellow leaves would be curling up as well. Mandevilla wont have the same affect on animals but it might cause mild indigestion especially in pets with sensitive stomachs.
Other symptoms such as agitation disorientation ataxia and tremors may occur as well. If this is the case the yellow leaves would be curling up as well. Height 10 feet 3 meters Exposure well-lit Soil well-drained.
According to the American Society for the Prevention of Cruelty to Animals dogs that ingest morning glory flowers may exhibit gastrointestinal symptoms such as nausea loss of appetite and diarrhea.
Height 10 feet 3 meters Exposure well-lit Soil well-drained. 09122018 Mandevilla is part of the dogbane family Apocynaceae as are plants such as oleandar Nerium oleander in USDA zones 8 through 10 and periwinkle Vinca rosea in USDA zones 4 through 9. Plant vining mandevilla on a trellis so it has plenty of space to spread out. Vining mandevillas make an excellent screen when grown on tall and wide trellises.