Tibetan Terriers (often called TTs) are sometimes called a large dog in a small dog's body, because they have a personality that is more like some of the larger breeds as opposed to what might be expected from their size.he Tibetan Terrier is a medium sized (averaging 14-16 inches at the shoulder, 20-24 pounds) dog whose most dramatic physical characteristic might be the long, profuse, double coat.
nonliving A virus is a submicroscopic obligatory parasitic particle that infects cells in biological organisms. Viruses are non-living particles that can only replicate when an organism reproduces the virulent RNA or DNA.
2. parasitic fetus. accidental parasite one that parasitizes an organism other than the usual host. facultative parasite one that may be parasitic upon another organism but can exist independently. incidental parasite accidental parasite.malarial parasite Plasmodium. obligate parasite (obligatory parasite) one that is entirely dependent upon a host for its survival.arasite. a plant or animal that lives upon or within another living organism at whose expense it obtains some advantage. See also symbiosis. Among the many parasites in nature, some feed upon animal hosts, causing diseases ranging from the mildly annoying to the severe and often fatal.