"It is correct to periphrase blood or carrion in terms of the beast which is called Strangler, by calling them his Meat and Drink; it is not correct to express them in terms of other beasts. The Strangler is also called Wolf.
The Prose Edda
The Prose Edda 2.57
As Thjódólfr sang:
Enough guesting to the Ravener Was given, when the Son of Sigurdr Came from the North, the Wolf To lure from the wood to the wound.
Here he is called Ravener also.
Greedy One, as Egill sang:
The Greedy One gashed Grisly wounds, when plashed The red Point-Creek On the raven's beak.
Witch-Beast, as Einarr sang:
The Götha, cold with venom, With hot Wound-Gush was reddened; The Witch-Beast's warm drink, mingled With the water, in the sea poured.
She-Wolf, as Arnórr sang:
The She-Wolf's evil Kindred Swallowed the corpse, harm-swollen, When the green sea was turnèd To red, with gore commingled.
Strangler, as Illugi sang:
There was happiness for the Strangler When my lord pursued hosts full many; With the sword the Necklet-Minisher Pierced the swart Snake of the Forest.
Thus sang Hallr:
He sated the Heath-Beasts' Hunger: The hoar howler in wounds gladdened; The king reddened the Wild One's mouth-hairs,— The Wolf went to drink of the wound.
And again, as Thórdr sang:
In blood Gjálp's Stud-Horse waded, The dusty pack got fullness Of the Greedy One's Wheat; the howler Enjoyed the Ravener's Gore-Drink.
The bear is called Wide-Stepper, Cub, Winterling, Ourse, Gib-Cat, Tusker, Youngling, Roarer, Jölfudr, Wilful-Sharp, She-Bear, Horse-Chaser, Scratcher, Hungry One, Blómr, Bustler. The hart is called Módrödnir, Dalarr, Dalr, Dáinn, Dvalinn, Duneyrr, Durathrór. These are the names of horses enumerated in the Rhymes of Thorgrímr:
Hrafn and Sleipnir, The famous horses; Valr and Léttfeti; Tjaldari a was there too; Gulltopr and Goti; I heard Sóti told of; Mór and Lungr with Marr.
Vigg and Stúfr Were with Skævadr; Blakkr could well bear Thegn; Silfrtoppr and Sinir; I heard Fákr spoke of; Gullfaxi and Jór with the Gods were.
Blódughófi hight a horse That they said beareth The strength-eminent Atridi; Gísl and Falhófnir; Glær and Skeidbrimir; Mention, too, was made of Gyllir.
These also are recorded in Kálfsvísa:
Dagr rode Drösull, And Dvalinn rode Módnir; Hjálmthér, Háfeti; Haki rode Fákr; The Slayer of Beli Rode Blódughófi, And Skævadr was ridden By the Ruler of Haddings.
Vésteinn rode Valr, And Vifill rode Stúfr; Meinthjófr rode Mór, And Morginn on Vakr; Áli rode Hrafn, They who rode onto the ice: But another, southward, Under Adils, A gray one, wandered, Wounded with the spear.
Björn rode Blakkr, And Bjárr rode Kertr; Atli rode Glaumr, And Adils on Slöngvir; Högni on Hölvir, And Haraldr on Fölkvir; Gunnarr rode Goti, And Sigurdr, Grani.
Arvakr and Alsvidr draw the Sun, as is written before; Hrímfaxi or Fjörsvartnir draw the Night; Skinfaxi and Gladr are the Day's horses.
"These names of oxen are in Thorgrímr's Rhymes:
Of all oxen the names Have I accurately learned,— Of these: Raudr and Hœfir, Rekinn and Hýrr,
Himinhrjódr and Apli, Arfr and Arfuni.
These are names of serpents: Dragon, Fáfnir, Mighty Monster, Adder, Nídhöggr, Lindworm, She-Adder, Góinn, Móinn, Grafvitnir, Grábakr, Ófnir, Sváfnir, Hooded One.
Neat-Cattle: Cow, calf, oxen, heifer, yearling, steer, bull. Sheep: Ram, buck, ewe, lamb, wether. Swine: Sow, she-pig, boar, hog, suckling.