1.Two (Genesis 6:19-20) - "And of every living thing of all flesh, you shall bring two of every kind into the ark, to keep them alive with you; they shall be male and female. 20Of the birds after their kind, and of the animals after their kind, of every creeping thing of the ground after its kind, two of every kind will come to you to keep them alive."
2.Seven (Genesis 7:2-3) - "You shall take with you of every clean animal by sevens, a male and his female; and of the animals that are not clean two, a male and his female; 3also of the birds of the sky, by sevens, male and female, to keep offspring alive on the face of all the earth."
Yes at the time they were but I don't know for sure what was on the ark. Were great danes and boxers or clydesdales on the ark ? A lot of diversity came after the flood.
Gen 6:20 Of fowlsH4480 H5775 after their kind,H4327 and ofH4480 cattleH929 after their kind,H4327 of everyH4480 H3605 creeping thingH7431 of the earthH127 after his kind,H4327 twoH8147 of everyH4480 H3605 sort shall comeH935 untoH413 thee, to keep them alive.H2421
H4480
מנּי מנּי מן
min minnı̂y minnêy
min, min-nee', min-nay'
For H4482; properly a part of; hence (prepositionally), from or out of in many senses: - above, after, among, at, because of, by (reason of), from (among), in, X neither, X nor, (out) of, over, since, X then, through, X whether, with.
H4327
מין
mı̂yn
meen
From an unused root meaning to portion out; a sort, that is, species: - kind. Compare H4480.
H4480
מנּי מנּי מן
min minnı̂y minnêy
min, min-nee', min-nay'
For H4482; properly a part of; hence (prepositionally), from or out of in many senses: - above, after, among, at, because of, by (reason of), from (among), in, X neither, X nor, (out) of, over, since, X then, through, X whether, with.
Looks like only a portion of each family was on the ark. Species could represent a family group.