122 THE CANINE FAMILY 
hostility of his family to tigers, by his unceasing 
pursuit of them in the night, and announcing his 
approach by a particular cry of warning, which for- 
merly was mistaken for the act of providing for the 
monster. The jackal does not precede, but follows 
at a safe distance; and at the time his note of cau- 
tion is uttered, no other animal is heard to respond 
to it; while at other times the cry of one is an- 
swered in every direction, by all the individuals 
then in hearing. The disposition to devour a slain 
or wounded companion, which we still see partially 
evinced in domestic dogs (who generally, when two 
are fighting, rush to the spot and join in biting the 
one who is worsted), is, however, modified by their 
social instinct ; for Dr Daniel Johnson, long resident 
in India, relates, that in earths of burrows (those 
troglodyte cities of canines usually dug by jackals), 
both wolves and hyenas take up their quarters 
without attempting to molest each other, although 
the openings of their mutual retreats are not far 
asunder. There is a kind of understood confederacy 
between the cohabiting species, and it is probable 
that hostility is transferred to the next community 
of burrows. 
In the diurnal canines, part are of a middle stature 
and a part are small. Their structure indicates 
vigour and activity ; the larger species, in particular, 
exhibit in the fore-quarters solidity and strength, 
and in the posterior part slenderness and speed. 
The legs are long, the neck muscular and length- 
ened ; the head is rather pointed, the chest deep, 
