yeah, when dragons are housed with too many to a tank and not enough food they will start to nip. Sometimes if there are too many of them in too smalla space they will nip anyway. They will nip tails and toes and sometimes whole feet.....if they are crowded as they get older, they eventually kill eachother. Not plesant.
It happens a lot at petstores.
To avoid this at home keep thebabies in small groups. 20gallon long size tanks are the best for starting them. You could priobaly house 5 hatchlings, maybe 7 in one 20gallon long tank. After they grew a couple inches you will want to seperate them more. Groups of 2-3 work ok, and of course kept singly is best. Offer crickets 2-3 times a day. Watch the dragons eat, make sure they are all eating. Any dragons that do not eat should be seperated and housed alone and coaxed to feed. If your animals seem established enough you could ideally feed each baby seperately in a seperate container, at least one time a day. (doing that three times a day would be time consuming) so you are sure they are all getting plenty to eat. And you can also keep better track of how much they are eating.
You can leave veggies in always to to give them something to nibble on. Be aware of the mroe dominant beardies (fastest growing, first to eat, babies in the highest basking spots) and seperate them out as they grow larger.
As for the one you have now i would keep applying neosporin and watch for infection. They should be kept on paper towels to avoid infection as well. If it still looks raw you may want to seperate him while he heals
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0.1 Bearded dragon
0.1 mexican Black kingsnake
1.1.2 Leopard Gecko's (normal:normal:tang:baldy hypo tang)
0.0.1 Tokay Gecko
1.0 Blue Tongue Skink
0.0.1 Reverse Okeetee Corn
0.1 Anerythristic Corn
0.0.1 Red Tegu
0.1 Bullmastiff
4.1 Cats