34 MAMMALIA. [Cnap. I. 
are at present bred by the horse-keepers to be killed 
for sake of the reward. 
The Pariahs of Colombo exhibit something of the 
same instinct, by which the dogs in other eastern cities 
partition the towns into districts, each apportioned to a 
separate pack, by whom it is jealously guarded from 
the encroachments of all intruders. Travellers at Cairo 
and Constantinople are often startled at night by the 
racket occasioned by the demonstrations made by the 
rightful possessors of a locality in repelling its invasion 
by some straggling wanderer. At Alexandria, in 1844, 
the dogs had multiplied to such an inconvenient extent, 
that Mehemet Ali, to abate the nuisance, caused them 
to be shipped in boats and conveyed to one of the is- 
lands at the mouth of the Nile. But the streets, thus 
deprived of their habitual patroles, were speedily in- 
fested by dogs from the suburbs, in such numbers 
that the evil became greater than before, and in the 
following year, the legitimate denizens were recalled 
from their exile in the Delta, and speedily drove back 
the intruders within their original boundary. May 
not this disposition of the dog be referable to the 
impulse by which, in a state of nature, each pack ap- 
propriates its own hunting-fields within a particular 
area? and may not the impulse which, even in a 
state of domestication, they still manifest to attack 
a passing dog upon the road, be a remnant of this 
localised instinct, and a concomitant dislike of in- 
trusion ? 
Jackal.—The Jackal’ in the low country of Ceylon 
hunts thus in packs, headed by a leader, and these 
audacious prowlers have been seen to assault and pull 
1 Canis Aureus, Linn. 
