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The male sings when storms approach and again when storms have passed. [45] In addition to its song, the species has a number of calls used for communicating specific information, such as when a ground predator approaches and when a nest or another American robin is being directly threatened.
The inside of the latex sleeve is lightly lubricated. The male is allowed to sniff a female in estrus. Experienced studs cooperate readily in the process. New studs often require encouragement in the form of manual stimulation. [43] Generally the male will mount the female, and the collector quickly directs the male's penis into the latex sleeve.
Dogs have ear mobility that allows them to rapidly pinpoint the exact location of a sound. Eighteen or more muscles can tilt, rotate, raise, or lower a dog's ear. A dog can identify a sound's location much faster than a human can, as well as hear sounds at four times the distance. [41] Dogs can lose their hearing from age or an ear infection. [42]
This category contains articles about the physical structure and appearance of the domestic dog. For diseases and disorders of dog anatomy, see Category:Dog health . Pages in category "Dog anatomy"
Turdus is a genus of medium-sized mostly insectivorous or omnivorous birds in the wider thrush family, Turdidae.The genus name Turdus is Latin for 'thrush'.. Most of the species are called thrushes; the term thrush is also used for many other birds in the family Turdidae, as well as for a few species belonging to other families.
American robin (T. migratorius) (so named by 1703) Rufous-backed thrush (T. rufopalliatus) Rufous-collared thrush (T. rufitorques) Formerly other American thrushes, such as the clay-colored thrush (T. grayi) Pekin robin or Japanese (hill) robin, archaic names for the red-billed leiothrix (Leiothrix lutea), red-breasted songbirds
The term comes from the Greek γυνή (gynē) 'female', ἀνήρ (anēr) 'male', and μορφή (morphē) 'form', and is used mainly in the field of entomology. Gynandromorphism is most frequently recognized in organisms that have strong sexual dimorphism such as certain butterflies, spiders, and birds, but has been recognized in numerous ...
For domestic dogs the tie may last up to half an hour or more, though usually less. [7] When male canines are sexually excited, the bulbus glandis may swell up inside the penile sheath, even if the dog has been neutered. [8] The bulbus glandis also occurs in the penises of some pinnipeds, including South American fur seals. [9]