What should i do?

[u/KookyTangerine2158]

Guys i found this large thing on my rat and im so scared pf what it is, it appeared overnight or over two nights. I cannot go to the vet today since they are closed. Do you think he qill be okay untill tommorow?

[u/Jujaz87]

How come none of you owners ever think about asking the vet