ANIMAL INTELLIGENCE. 
170 
the dog-lovers, who may perhaps with justice complain 
that I have ignored a number of published facts, stand- 
ing on more or less good authority, and appearing more 
wonderful than any of the facts that I have rendered. To 
this criticism I have only to answer that it is better to err 
on the safe side, and that if the facts which I have ren- 
dered are sufficient to prove the existence of all the 
psychological faculties which the dog can fairly be said to 
possess, it is of less moment that partly doubtful cases 
should be suppressed, where the only object of introducing 
them would be to show that some particular faculties were 
in some particular instances more highly developed than 
was the case in the instances here recorded. 
