Unfortunately, yes. Petco, for example, had to withdraw its stainless steel bowls in 2012 because it was discovered that they were radioactive, according to Basis Pet. In addition to verifying product quality standards, never choose a stainless steel bowl that is not dishwasher safe or one that states it is only for household use.
The descriptions mentioned above when describing dog feeders may hide the fact that the stainless steel used in its fabrication is inferior to type 304 (also known as 18/8 stainless steel), the most common type of stainless steel used in dish-ware.
Dogs have the ability to hear sounds up to a distance of 225 metres.