And the cow
parah  (paw-raw')
a heifer -- cow, heifer, kine.
and the bear
dob  (dobe)
the bear (as slow) -- bear.
shall feed
ra`ah  (raw-aw')
to tend a flock; i.e. pasture it; intransitively, to graze; generally to rule; by extension, to associate with (as a friend)
their young ones
yeled  (yeh'-led)
something born, i.e. a lad or offspring -- boy, child, fruit, son, young man (one).
shall lie down
rabats  (raw-bats')
to crouch (on all four legs folded, like a recumbent animal); be implication, to recline, repose, brood, lurk, imbed
yachad  (yakh'-ad)
a unit, i.e. (adverb) unitedly -- alike, at all (once), both, likewise, only, (al-)together, withal.
and the lion
'ariy  (ar-ee')
a lion -- (young) lion, + pierce (from the margin).
shall eat
'akal  (aw-kal')
to eat -- at all, burn up, consume, devour(-er, up), dine, eat(-er, up), feed (with), food, freely, in...wise(-deed, plenty), (lay) meat, quite.
teben  (teh'-ben)
material, i.e. (specifically) refuse haum or stalks of grain (as chopped in threshing and used for fodder) -- chaff, straw, stubble.
like the ox
baqar  (baw-kawr')
beef cattle or an animal of the ox family of either gender (as used for plowing); collectively, a herd -- beeve, bull (+ -ock), + calf, + cow, great (cattle), + heifer, herd, kine, ox.