PAWS Lite Edition provides essential functionality such as invoicing, billing, reminders, and reports.  It is designed for the small veterinary practice owner who needs a software system but doesn't have a lot of money to spend.  It may be upgraded to the Full Edition later for a nominal fee.
Feature Lite Edition Full Edition
Client Accounts
Patient Records
Inventory Items
Professional Services
Packages of commonly bundled services and inventory items.
Client Invoicing
Estimates
Preliminary Invoices
Preferred Client Discounts
Maximum Discount Limit
Pharmacy Labels
Monthly Billing
Finance Charges
Grace Period
NSF Check processing
Customize Revenue Departments including doctors, relief vets, technicians, groomers, etc.
Categories
Travel Sheets
Employee Records
Client Account History
Patient History
Recent Client/Patient List
Invoice Lookup
Over the Counter Sales
Deposits on Account
Payments from cash, checks, most charge cards, coupons, debit cards, etc.
Client Account Adjustments
Limited Reminders (2)  
Generic Postcard Formats
Standard Postcard Stocks
Daily, Year-to-Date, and Cumulative Income Reports
Client Reports
Patient Reports
Doctor Reports
Price Lists
Sales Reports
Recall Reports
Billing Reports
Export Report Data to MS Word, Excel, WordPerfect, Works, and other programs.
Drag and Drop to Select Client or Patient Record
Drag and Drop to Add a Charge to an Invoice
Drag and Drop to Open an Active Invoice for further updates.
Search for Clients on partial name string, account number, telephone numbers, address, social security number, visit dates, zip code, account balance, invoice number and more. 
Search for Patients on partial name, breed, species, visit dates, rabies tag, microchip ID, tattoo, doctor, professional service, inventory item, and more.
Search for Professional Service and Inventory Items by code, partial name, bar code, or category.
Scan UPC bar codes to add charges to invoices.
PhotosPhoto images of clients, patients, doctors, employees, and inventory items.  
SOAP Medical Records input, search on keywords and phrases, print partial or entire patient chart.  
Unlimited Reminders types automatically generated and tracked.  
Customize Postcard Formats  
Security.  Keep unauthorized users out of confidential areas.  
Inventory Control  
Physical inventory lists  
Inventory reorder lists  
Purchase Orders  
Receive Inventory  
Mass Pricing Updates  
Bi-level and Tri-level pricing for volume sales  
Automatic discounts for volume sales  
Customized lookup tables for species, breeds, colors and markings, pharmacy abbreviations, and states.  
Setup check lists  
Track inventory by vendor, manufacturer and storage locations  
Expand purchase units into sales units  
Cost management of cost, price, margin and markup  
Automatic markup as costs change.  
Unlimited client letter types such as new client letter, referral client letter, sympathy letters, breed, species, marketing promotions, mass mailings, and more using your favorite word processor's mail merge facility.  
Employee Time Clock tracks hours worked and generates reports  
Make appointments using drag and drop technology.