The altered animals born without that specific receptor ate much more than their normal littermates, weighed 13 percent more, and accumulated 50 percent more fat, the researchers reported.
32.
During this stage the nose is the primary sense organ used by puppies to find their mother's teats, and to locate their littermates, if they become separated by a short distance.
33.
This is the chronicle of Procyon, from his birth, mother's lessons, and adventures with his littermates, to his solitary adolescence, mating, hibernation, and encounters with humans.
34.
For a decade, Mignot and his colleagues have scrutinized the dogs'DNA, comparing it with that of normal littermates until, in 1998, they narrowed the defect down to a single chromosome.
35.
This indicates that meerkat pups avoid some of the costs of direct competition incurred by an escalation of begging as other pups beg, by begging in gaps between the bouts of others or avoiding littermates.
36.
Sam68-/-mice weighed less than Sam68 + / + littermates and magnetic resonance imaging analysis confirmed that young Sam68-/-mice exhibited a profound reduction in adiposity, although food intake was similar.
37.
Litter sizes range from two to six and the average gestation period is 25 days . The litter may stay together for one to two months but separates when there is a high level of aggression among the littermates.
38.
The smaller cockers were used to hunt woodcock, while their larger littermates, the springer spaniels, would " spring " or flush the gamebird into the air where a trained falcon or hawk would bring it to the handler.
39.
According to a biography of Reilly which Reilly's owner wrote on her blog, she is the third of four littermates and the oldest female within her litter ( all of whom became adult dogs on March 25, 2016 ).
40.
Mutant mice are phenotypically indistinguishable from their unaffected littermates at birth, but gain weight rapidly throughout their lives, reaching a weight three times that of unaffected mice . " ob / ob " mice develop increased levels of insulin.
