Huddling can be defined as “an active and close aggregation of animals”. It is a cooperative
group behaviour, permitting individuals involved in social thermoregulation to minimize heat …

▪ Abstract The kinship theory of genomic imprinting proposes that parent-specific gene
expression evolves at a locus because a gene's level of expression in one individual has …

Many vertebrates grow up in the company of same or different-age siblings, and relations
among them can be expected to significantly influence individual life histories and the …

Although most mammals grow up in the company of same or different age sibs (or half sibs),
surprisingly little attention has been given to how relations among them might influence the …

Growth during an animal's early ontogeny can have important consequences for its health,
reproduction and survival during later life. We studied pre-weaning growth rates of two …

This article is part of a Special Issue “Parental Care”. Jay Rosenblatt effectively promoted
research on rabbit maternal behavior through his interaction with colleagues in Mexico …

Summary 1 Environmental conditions during an animal's early life can have profound long‐
term consequences and affect its fitness. In particular, maternal and sibling effects, which …

Altricial birds are unable to maintain body temperature when exposed to low ambient
temperatures during the first days after hatching. Thermoregulatory capacity begins to form …

Rabbit pups, Oryctolagus cuniculus, are nursed only for about 3min once every 24h, and we
have previously reported indirect evidence of strong competition among littermates for the …

Abstract In the Serengeti National Park, Tanzania, large fluctuations of prey abundance
alters the frequency at which spotted hyena (Crocuta crocuta) cubs are nursed and thus the …