Elmgarden has dated this piece to the 19th Century.
It is unsigned so may have been painted by either Landseer or one of his pupils

Most unfortunately the slate has been broken and repaired and then strengthened with a wooden backing
Super painting capturing the terrified facial expressions of the trio
The slate is 20” in diameter
TSW49
Elmgarden has dated this piece to the 19th Century.
You can view the stock and full dealer information on the Elmgarden Profile Page