2006-11-01 15:01:44 · 6 answers · asked by lilmissheiress 2 in Pets ➔ Other - Pets
There are many examples (see below).
In fact, rearing one's young is "expensive" in terms of energy/time investment, and it's not such a widespread practice among animals.
It has some advantages, of course, and it has evolved repeatedly in many groups, but still, and considering that the most diverse animals are insects, I'd say most animals don't display parental care for their offspring.
Typically, behavior in these animals has a strong genetic basis (they don't need to "learn" from their parents), they are produced in higher numbers - compared to species with parental care-, and their mortality is high.
Some examples among vertebrates:
Jawless fishes, most bony fishes, most amphibians, many reptiles (especially turtles).
Among invertebrates:
Most insects, most marine invertebrates including sponges, cnidarians (jellyfish, corals, etc), annelids, most mollusks, echinoderms, etc.
2006-11-02 15:54:53 · answer #1 · answered by Calimecita 7 · 4⤊ 0⤋
The vast majority of reptiles don't rear their young, with the exception of crocodilians. Most fish, as well. Any mammal or bird rears its own young. Probably a lot of insects don't rear them either, although I don't know if you were counting insects.
2006-11-01 16:58:52 · answer #2 · answered by Dreamer 7 · 0⤊ 0⤋
Turtles, Snakes,Butterflies,Moths,Insects,
2006-11-01 15:07:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Tribbles!
2006-11-01 15:30:14 · answer #4 · answered by kitkatish1962 5 · 0⤊ 0⤋
seaturtles, snakes, some fish.
2006-11-01 15:09:17 · answer #5 · answered by wild&free 4 · 0⤊ 0⤋
I know salmon don't and neither do frogs.
2006-11-01 15:06:49 · answer #6 · answered by bex 2 · 0⤊ 0⤋