Yes, Apricot is toxic to dogs!
Dogs accidentally consuming the Apricot plants can show the following clinical symptoms: Vomiting, Prolonged Depression, Incoordination, Hypersalivaton, Sleepiness Or Excitation, Dilated Pupils, Low Body Temperature, Low Blood Pressure, Coma, Seizure And Death (In Rare Cases).
Apricot consumption is also toxic to Cats and Horses.
Toxic Principles Of Apricot: Cyanogenic glycosides found in some species.
More Info About The Apricot Plant
Scientific Name: Prunus armeniaca
Family: Rosaceae.
Also known as: Group also includes Plum, Peach, Cherry.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.