1- With regard to numbers, there is one Hell and one Paradise, but each of them has degrees and levels. The levels of Hell differ according to the extent of their inhabitants’ disbelief in this world. The hypocrites will be in the lowest level of Hell. We know of no limit to the number of degrees and levels in Paradise. It was said that their number is equal to the number of verses in the Quran. 2- The Sunnah describes the position of those who do certain actions. For example: 1- Faith in Allah and in the Messengers, 2-Jihad, 3-Those who sincerely desire martyrdom, 4- giving out in charity, 5- Doing wudu properly, and 6- Memorizing Quran

The animals that will be in Jannah are of three types: 1- Specific animals such as the dog of the people of the Cave and the she-camel of Prophet Salih. 2- Those which are mentioned in the Quran and Sunnah, which Allah has prepared for the believers in Paradise. 3- Those animals which have been specifically mentioned in the authentic Sunnah.

Abiding for eternity in Hell is of two types, eternal abiding which never ends, which is the abiding of the unbelievers in Hell. See the detailed answer for the other type of eternity in Hell.