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What is a Frog?

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  1. Kermit


  2. Sorry your q? isn't clear. A frog is an amphibian animal.

  3. it is a amphibian.

  4. A frog is not a reptile; it is an amphibian in the order Anura.

    Frogs can move easily on land by climbing and jumping and most of them  have a semi-aquatic lifestyle.  A frog lay their eggs in ponds, puddles, ponds, or even in lakes.

    Frog's larvae is not called frog, it's called tadpole. A tadpole, looks like a giant human's sperm.

  5. Hoghead is right.

    Also if you are dealing with model trains you need to know there are 2 types: 'live' and 'dead' frogs (also called 'electrofrog' and 'insulfrog' by one manufacturer).

    In the 'live' frog the current feed to the track continues throughout the frog, which means special wiring arrangements if you are using the point in a return loop or a crossover.

    In a 'dead' frog the current feed is interrupted over the frog, thus insulating it and making wiring arrangements simpler. Model trains are designed to have sufficient pickups to avoid 'gapping' over the frog, provided the rest of your trackwork is squeaky-clean.

  6. a frog is a little green thingy that has 4 legs that hopes and eats flies and go like ribit ribit

  7. Umm... the frog he is talking about is under the Rail category. It is part of a switch. He does not mean a little green thing that jumps.

  8. I'm not MOW, but:

    A frog is the part of a switch that has necessary "groves" in it to allow the flanges on the wheels of the equipment pass over a rail to run on another.  It is found at the point where the rails diverge after crossing the points and stock rail.

    The standard frog is the most common, but there are "movable point frogs" as well.  They accomplish the same thing, are usually found on other than main line track, such as in yards or industrial parks.  Other moveable point frogs have a hydraulic "spring loaded" mechanism, and these are found on main line track.

    Supposedly they got their name because the standard frog looked like a frog, spread eagle on its back.  Personally, I don't see it, but the first generation of this track equipment may have had a better resemblance to the amphibian it is named for.

    Addendum:  I forgot to mention that some devices used to rerail derailed equipment are also called frogs.  They are useful only when a wheel or truck is derailed and still in close proximity to the rail.  

    There are two types of these, the "budda" frog and the "butterfly" frog.  They are laid down in front of the dreailed equipment and as the car is pulled forward, the wheel climbs up the incline of the frog and, at the apex, falls back onto the rail.

  9. Several replies on BOARD

  10. If you don't know what a frog is how do you know how to type? Or read? Or eat? Or kill babies?

  11. Since this was place in RAILROAD not IN AMPHIBIOUS creatures section, Hoghead is correct.

    Here's a photo of a cast frog;

    http://en.wikipedia.org/wiki/Image:Cast_...

    http://en.wikipedia.org/wiki/Image:Eisen...

  12. They're things that little boys like to play with!  Why!?

  13. Someone from France

  14. I have here lots of info for you, so here it is.

    The green frog is generally greenish or greenish-brown above, with numerous dark brown or grayish spots or blotches. Dusky bars run across the legs. The venter is white, although dark spots or mottling can be present under the legs and head, and the throat of adult males is bright yellow. Dorso-lateral folds are prominent, extending almost the entire length of the back and branching almost at right angles behind the tympanum. Often the ridges are interrupted just before they terminate. In adult males, the tympanum is larger than the eye.

    Green frogs could easily be confused with both the larger bullfrog and more aquatic mink frog, but bullfrogs never have prominent dorso-lateral folds and adult mink frogs smell musky when handled. Furthermore, the webbing on the toes of the hind feet of the green frog rarely passes beyond the second joint of the fourth toe and never reaches the tip of the fifth toe. In the mink frog, this webbing extends to the last joint of the fourth toe and to the tip of the fifth toe.

    Adult green frogs range from 6 to 10.5 cm (2.4-4.1") long, with females being somewhat larger than males. Adults usually reach sexual maturity the first summer season after metamorphosis, when males are between 6-6.5 cm (2.4-2.6") long and females are between 6.5-7.5 cm (2.6-3.0") long. Some individuals may not breed until the second year after transformation.

    Tadpoles are olive green with numerous dark spots on the dorsum and an iridescent cream color on the venter. The throat and sides are mottled with dark green, and the tail is green mottled with brown. Tadpoles grow to 6.4 cm (2.5") long and have an elongate tail with an acute tip. The larval stage lasts a little over 1 year, then tadpoles metamorphose into frogs that measure between 2.8-3.8 cm (1.1-1.5")

    long.

    During the breeding season, males emit a throaty staccato "unck" that sounds much like plucking a loose banjo string. Occasionally, males will repeat the note 3-4 times in a rapid series, each note getting progressively softer. Using sonagrams, Wells (1978) was able to distinguish different calls used in different contexts. Hope this is enouth info on frogs.

  15. a green thing that jumps around in water and gives u warts if it pisses on u
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