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A claw is a curved, pointed appendage found at the end of a toe or finger in most amniotes (mammals, reptiles, birds). Some invertebrates such as beetles and spiders have somewhat similar fine, hooked structures at the end of the leg or tarsus for gripping a surface as they walk. The pincers of crabs, lobsters and scorpions, more formally known as their chelae, are sometimes called claws.


A true claw is made of a hard protein called keratin. Claws are used to catch and hold prey in carnivorous mammals such as cats and dogs, but may also be used for such purposes as digging, climbing trees, self-defense and grooming, in those and other species.

In tetrapods, claws are made of keratin and consist of two layers. The unguis is the harder external layer, which consists of keratin fibers arranged perpendicular to the direction of growth and in layers at an oblique angle. The subunguis is the softer, flaky underside layer whose grain is parallel to the direction of growth. The claw grows outward from the nail matrix at the base of the unguis and the subunguis grows thicker while travelling across the nail bed. The unguis grows outward faster than the subunguis to produce a curve and the thinner sides of the claw wear away faster than their thicker middle, producing a more or less sharp point. Tetrapods use their claws in many ways, commonly to grasp or kill prey, to dig and to climb and hang.

All carnivorans have claws, which vary considerably in length and shape. Claws grow out of the third phalanges of the paws and are made of keratin. Many predatory mammals have protractile claws that can partially hide inside the animal's paw, especially the cat family, Felidae, almost all of whose members have fully protractible claws. Outside of the cat family, retractable claws are found only in certain species of the Viverridae (and the extinct Nimravidae).[2] A claw that is retractable is protected from wear and tear.

Most cats and dogs also have a dewclaw on the inside of the front paws. It is much less functional than the other claws but does help the cats to grasp prey. Because the dew claw does not touch the ground, it receives less wear and tends to be sharper and longer.

A nail is homologous to a claw but is flatter and has a curved edge instead of a point. A nail that is big enough to bear weight is called a "hoof". (Nevertheless, one side of the cloven-hoof of artiodactyl ungulates may also be called a claw).

Every so often, the growth of claws stops and restarts, as does hair. In a hair, this results in the hair falling out and being replaced by a new one. In claws, this results in an abscission layer, and the old segment breaks off. This process takes several months for human thumbnails. Cats are often seen working old unguis layers off on wood or on boards made for the purpose. Ungulates' hooves wear or self-trim by ground contact. Domesticated equids (horses, donkeys and mules) usually need regular trimming by a farrier, as a consequence of reduced activity on hard ground.

Primate nails consist of the unguis alone, as the subunguis has disappeared. With the evolution of grasping hands and feet, claws are no longer necessary for locomotion, and instead most digits exhibit nails. However, claw-like nails are found in small-bodied callitrichids on all digits except the hallux or big toe. A laterally flattened grooming claw, used for grooming, can be found on the second toe in living strepsirrhines, and the second and third in tarsiers. Aye-ayes have functional claws on all other digits except the hallux, including a grooming claw on the second toe.[3] Less commonly known, a grooming claw is also found on the second pedal digit of night monkeys (Aotus), titis (Callicebus), and possibly other New World monkeys.[4]

Most reptiles have well-developed claws. Most lizards have toes ending in stout claws.[5] In snakes, feet and claws are absent, but in many boids such as Boa constrictor, remnants of highly reduced hind-limbs emerge with a single claw as "spurs" on each side of the anal opening.

A talon is the claw of a bird of prey, its primary hunting tool.[6] The talons are very important; without them, most birds of prey would not be able to catch their food. Some birds also use claws for defensive purposes. Cassowaries use claws on their inner toe (digit II) for defence and have been known to disembowel people.[7][8] All birds, however, have claws, which are used as general holdfasts and protection for the tip of the digits.

The hoatzin and turaco are unique among extant birds in having functional claws on the thumb and index finger (digits I and II) on the forelimbs as chicks, allowing them to climb trees until the adult plumage with flight feathers develop.[9][10] However, several birds have a claw- or nail-like structure hidden under the feathers at the end of the hand digits, notably ostriches, emus, ducks, geese and kiwis.[11]

The scientifically correct term for the "claw" of an arthropod, such as a lobster or crab, is a chela (plural chelae). Legs bearing a chela are called chelipeds. Chelae are also called pincers.

The claw will make at least seven collections on each street during leaf season. Starting October 23, 2022 you can use the SacRecycle Collection Calendar or SacRecycle app to receive an estimate of the next collection date. In the early part of the season, time between collections may be shorter. As leaf drop volume grows, and if wind and rainstorms occur, it can take crews longer rotate through the entire city. Always fill your container first as weekly collection will continue for organic waste containers.

Most of the time an imbalance of foot muscles typically causes claw toes. Specifically, your toe muscles contract too far, tighten the tendons and bend the joints. Foot muscles become unbalanced due to the following factors:

Caused by pressure and rubbing, corns and calluses are common in people who have claw toes. A bent joint can rub against the inside of a shoe, and so can the bottom of your foot. Corns are small and round and calluses are larger and have a more irregular shape. They may or may not be painful.

Claw Control has six challenges with increasing difficulty. The goal is to assign the gashlings their jobs to make six stuffed animals for the claw machine. In order to make all six stuffed animals successfully, you will need to use your decomposition skills and break the problem into smaller parts.

This Claw Friendly Educational Toolkit was developed to support veterinary professionals by providing comprehensive and robust research and educational resources in one place. Scratching is a normal feline behavior and the AAFP strongly opposes declawing as an elective procedure, as stated in the 2017 Declawing Position Statement.

Each page also has an associated printable PDF you can use in your practice. Additionally, links to the Declawing Position Statement and a free webinar are included on the left sidebar. A printable version of the entire Toolkit, which contains information from each page, is also included on the left sidebar.

Aim: The purpose of this investigation was to evaluate the ability of cat's claw, an Amazonian medicinal plant, to treat osteoarthritis of the knee, collect safety and tolerance information and compare the antioxidant, and anti-inflammatory actions of Uncaria guianensis and Uncaria tomentosa in vitro.

Materials and methods: Forty-five patients with osteoarthritis of the knee were recruited, 30 were treated with freeze-dried U guianensis, and 15 with placebo. Hematological parameters were assessed on entry and exit of the four-week trial. Pain, medical and subject assessment scores and adverse effects were collected at weeks 1, 2 and 4. The antioxidant and anti-inflammatory activity of the cat's claw species was determined by the alpha,alpha-diphenyl-beta-picrylhydrazyl (DPPH) free radical scavenging method. Inhibition of TNFalpha and prostaglandin E2 (PGE2) production was determined in RAW 264.7 cells by ELISA.

Results: Cat's claw had no deleterious effects on blood or liver function or other significant side-effects compared to placebo. Pain associated with activity, medical and patient assessment scores were all significantly reduced, with benefits occurring within the first week of therapy. Knee pain at rest or at night, and knee circumference were not significantly reduced by cat's claw during this brief trial. In vitro tests indicated that U guianensis and U. tomentosa were equivalent at quenching DPPH radicals (EC50, 13.6-21.7 microg/ml) as well as inhibiting TNFalpha production. However, the latter action was registered at much lower concentrations (EC50, 10.2-10.9 ng/ml). Cat's claw (10 microg/ml) had no effect on basal PGE2 production, but reduced LPS-induced PGE2 release (P

Conclusion: Cat's claw is an effective treatment for osteoarthritis. The species, U guianensis and U tomentosa are equiactive. They are effective antioxidants, but their anti-inflammatory properties may result from their ability to inhibit TNFalpha and to a lesser extent PGE2 production.

John Soules Foods and Jurassic World Dominion have teamed up to create these prehistoric raptor claw shaped white meat chicken patties. John Soules Foods chicken tenders are made with 100% all natural, white meat chicken so you can feel confident about what your family is eating. And the delicious, golden breaded chicken tenders are shaped like raptor claws so your kids will love them.

You can prepare your raptor claw-shaped chicken tenders in an oven, air fryer or microwave. Whatever method you choose, the chicken tenders heat well from a frozen state. Follow the steps for each approach to heat your raptor claw chicken tenders effectively:

Our kid-friendly, nutritious chicken tenders are a great source of protein. We make our tenders with 100% all-natural white chicken meat. The chickens we use have no steroids or hormones added. We use the best ingredients to make delicious breaded raptor claw-shaped chicken tenders, which contain: 041b061a72


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