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The exterior of the Werewolf's Cave.
The interior of the Werewolf's Cave.
The Werewolf's Cave, located beyond the Honey Bee Gate, sits between the Cactus Field and the Pumpkin Patch. It is home to the werewolf and two spider-like creatures called Cave Monsters inside of it that will try to kill you. There is a 
Gold Egg token at the end of the cave.
To get the gold egg easily, prepare items or gear that give haste, such as boots, guards, 
Oil, Bear Morph, and stacks of Haste and/or Haste+. Afterwards, make a run for it, jumping the whole way to avoid getting killed. Extra boosts, however, are not required nor needed. If you are lucky, you may be able to get the golden egg through jumping. Sometimes, there is a glitch where the cave monsters don't spawn or they are lagging, and in that case, it is easy to get the gold egg without preparation. Getting Haste+ by using the Royal Jelly Dispenser in the Star Hall or by using codes can help, and another option is to defeat the cave monsters in the cave, and then get the gold egg, though that solution can be hard. If you have pollen in your bag and wish to keep it, you can exit the cave using a 
Whirligig to exit the Werewolf's Cave safely.
A sprout in the Mountain Top Field, as seen from the cave.
If there is a sprout in the Mountain Top Field, its light beam is visible inside of the Werewolf's Cave. If there's a cloud on the Mountain Top Field, the rain might be visible. Honeystorms, snow storms, and mythic meteor showers are also visible while inside the cave.