# Breeding Mechanics

### Overview

Breeding is a specific sort of adventure that does not yield any $FLY from staking. Instead, based on your Hoppers' Fertility attribute, there is a chance for your staked Hopper to return a Tadpole.

Breeding in Hoppers game requires only 1 of your Hoppers to be staked. 

Sending your Hopper into the Breeding area requires $FLY, which is burned.

![](/files/qELeDOi7Jgbasx6fUl4l)

Tadpoles are able to be collected on day one but are very rare for low-level Hoppers, regardless of your fertility attribute. For that reason, it is highly recommended to level your Hopper prior to directly entering the breeding area.

The maximum chance to spawn a tadpole is 90% at 10 Fertility and Level 100.

A hopper with Fertility of 4 and Level 12 will have a spawn chance of 21%

Tadpoles are NFTs and can be traded. 

* There are two different drop rates to keep track of:
  * The spawn chance of a tadpole is based on fertility and level.
  * If spawned, the rarity level of each tadpole is based on a different probability, in the following table.

<table><thead><tr><th width="186">Rarity Level</th><th>Chance</th></tr></thead><tbody><tr><td>Common</td><td>50%</td></tr><tr><td>Rare</td><td>30%</td></tr><tr><td>Exceptional</td><td>15%</td></tr><tr><td>Epic</td><td>4.6%</td></tr><tr><td>Legendary</td><td>0.4%</td></tr></tbody></table>

Tadpoles will lead to the next stage of Hoppers Game.

The cost to send your Hopper to breed is <mark style="color:green;">250</mark> $FLY.

You can not un-stake your Hopper from a breeding adventure for 24 hours.&#x20;

### Contracts

Breeding: [0x711233d6AAd35b14750F65f9CF413fa748149345](https://snowtrace.io/address/0x711233d6AAd35b14750F65f9CF413fa748149345#code)

Tadpole: [0x0e1ce5cd26d67fd416dc6a22eb97d60131d0901b](https://snowtrace.io/address/0x0e1ce5cd26d67fd416dc6a22eb97d60131d0901b)


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