Fish Really is Brain Food. A protein source linked to a great brain boost is fish -- rich in omega-3 fatty acids that are key for brain health.
new returning rats quarantine time frame the absolute minimum quarantining for bringing rats in is 14 days this covers the acquisition of new rats or the return of resident rats to the colony after exposure to other rats shows co breeding returned placements etc
Most rats live between 2-4 years, usually closer to 2 years. If you adopted your rats from an experienced rat breeder, it is not uncommon to have your rats live to be 4. Breeders purposely breeds genetically and behaviorally healthy rats. Pet stores don't always do this.