In Jainism, the term "yoni" refers to the type or category of birth an individual soul (jiva) may take. There are four main gatis (destinies) or states of existence: heavenly beings (devas), human beings (manushya), animals and plants (tiryancha), and hellish beings (naraki). Each of these can have various subcategories or yonis.

The term "dec yoni" is not standard in Jain canonical literature or common Jain terminology. If you are referring to a specific subcategory of yoni, please clarify your question. However, in Jain scriptures, details about the appearance, characteristics, and experiences of beings born in various yonis (such as narak yoni—hellish birth, tiryancha yoni—animal or plant birth, etc.) are described in texts like the Tattvartha Sutra and other Agamas.

For example:

• Deva yoni (heavenly birth): Beings are described as having radiant, beautiful forms, with supernatural abilities and immense pleasure, but subject to their own karmic limitations.
• Naraka yoni (hellish birth): Beings here experience intense suffering, darkness, and pain, and their forms are described as horrifying and distressing.
• Tiryancha yoni (animal/plant birth): The form depends on the specific animal or plant, usually characterized by limited intelligence and more suffering or ignorance compared to humans.
• Manushya yoni (human birth): Beings are born with the potential for spiritual progress, balanced pleasure and pain, and the capacity for right faith and conduct.

If you meant a specific yoni, such as "dash yoni" (ten types of births), or have a scriptural reference, please provide more details so I can give a precise Jain answer.