Receipts when a donation and purchase are combined into one

My question is if someone makes a purchase and at the same time makes a donation does the receipt have to list the amount of the taxable portion below* or can we just add our EID number to the bottom of the receipt and not have tax language. The donation would be listed above. Our shelters has a new software and donations is not the main focus.

Example

Dog Crate: $150

Donation $25

Total $175.00

*The MSPCA-Angell is a 501(c)(3) tax-exempt organization.

No goods or services were provided in exchange for this contribution.

Please retain this receipt for your tax records.