All the deer are of peculiar species, except two, which range from Malacca into India.

Of the cattle, one Indian species reaches Malacca, while the Bos sondiacus of Java and Borneo is also found in Siam and Burma.

A goat-like animal is found in Sumatra which has its representative in India; while the two-horned rhinoceros of Sumatra and the single-horned species of Java, long supposed to be peculiar to these islands, are now both ascertained to exist in Burma, Pegu, and Moulmein.

The elephant of Sumatra, Borneo, and Malacca is now considered to be identical with that of Ceylon and India.
In all other groups of Mammalia the same general phenomena recur.

A few species are identical with those of India.