$ doggo --nameserver=8.8.8.8 --query cnn.com
ERROR[2022-10-23T13:42:42-04:00] error parsing flags error="unknown flag: --nameserver"
$ doggo --nameservers=8.8.8.8 --query cnn.com
NAME TYPE CLASS TTL ADDRESS NAMESERVER
cnn.com. A IN 60s 151.101.67.5 8.8.8.8:53
cnn.com. A IN 60s 151.101.195.5 8.8.8.8:53
cnn.com. A IN 60s 151.101.131.5 8.8.8.8:53
cnn.com. A IN 60s 151.101.3.5 8.8.8.8:53
https://github.com/mr-karan/doggo/blob/9386c589bf54828264af1aedfdd9992f0a963a14/cmd/doggo/cli.go#L39
should be
nameserver
according to the usage/help.